118.01.2 App. A. Map of Ecoregions of Arkansas
AR ADC 118.01.2 App. AArkansas Administrative CodeEffective: May 7, 2022
Effective: May 7, 2022
Ark. Admin. Code 118.01.2 App. A
Formerly cited as AR ADC 014.04.2 App. A
118.01.2 App. A. Map of Ecoregions of Arkansas
Designated Uses, Specific Standards, and Maps of Waters of the State by Ecoregions
APPENDIX A: MAP OF ECOREGIONS OF ARKANSAS
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Ozark Highlands | A-3 | Ouachita Mountains | A-23 |
Boston Mountains | A-11 | Gulf Coastal | A-30 |
Arkansas River Valley | A-17 | Delta | A-41 |
Index to Plates of the Ozark Highlands
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DESIGNATED USES: OZARK HIGHLANDS ECOREGION
(Plates OH-1, OH-2, OH-3, OH-4)
Extraordinary Resource Waters
Current River (OH-4)
Eleven Point River (OH-4)
Strawberry River (OH-3, OH-4)
Little Strawberry River (OH-3)
Spring River, including its tributaries: Field Creek, Big Creek, English Creek, Gut Creek and Myatt Creek (OH-4)
South Fork Spring River (OH-3, OH-4)
North Sylamore Creek (OH-3)
Buffalo River (OH-2, OH-3)
Kings River (OH-2)
Bull Shoals Reservoir (OH-2, OH-3)
Natural and Scenic Waterways
Strawberry River from headwaters to Sharp-Izard County Line (OH-3, OH-4)
Kings River -- that segment in Madison County (OH-2)
Buffalo River (OH-2, OH-3)
North Sylamore Creek (OH-3) [FN1]
Ecologically Sensitive Waterbodies
Cave Springs Cave, Logan Cave and numerous springs and spring-fed tributaries which support southern cavefish, Ozark cavefish, Arkansas darter, least darter, Oklahoma salamander, cave snails, cave crawfish and unique invertebrates (OH-1, OH-2, OH-3)
Strawberry River -- location of Strawberry River darter (OH-3, OH-4)
Little Strawberry River -- location of the Strawberry River darter (OH-3)
Spring River -- snuffbox and pink mucket mussels; Ozark hellbender (OH-4)
Rock Creek -- snuffbox and pink mucket mussels; Ozark hellbender (OH-4)
Eleven Point River -- location of Ozark hellbender (OH-4)
Current River -- location of flat floater and pink mucket mussels (OH-4)
Illinois River -- Neosho mucket (OH-1)
Primary Contact Recreation -- all streams with watersheds of greater than 10 mi2 and all lakes/reservoirs [FN2]
Secondary Contact Recreation -- all waters [FN2]
Domestic, Industrial and Agricultural Water Supply -- all waters [FN2]
Aquatic Life [FN2]
Trout Waters
Bull Shoals Reservoir -- lower portion (OH-2)
White River from Bull Shoals Dam to Dam #3 (OH-3)
North Fork White River (OH-3)
Spring River from Mammoth Springs to South Fork Spring River (OH-4)
Upper White River from Beaver Dam to Missouri state line (OH-1)
Lakes and Reservoirs -- all
Streams
Seasonal Ozark Highlands aquatic life use -- all streams with watersheds of less than 10 mi2 except as otherwise provided in Rule 2.505
Perennial Ozark Highlands aquatic life use -- all streams with watersheds of 10 mi2 and larger and those waters where discharges equal or exceed 1 cfs
Site Specific Designated Use Variations Supported by Use Attainability Analysis or Other Investigations
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
OH-1 | 1 | Railroad Hollow Creek | No fishable/swimmable uses |
OH-1 | 2 | Columbia Hollow Creek | Seasonal aquatic life use March-June |
OH-1 | 9 | Town Branch from point of discharge of the City of Huntsville WWTP downstream to the confluence with Holman Creek | No domestic water supply use |
OH-1 | 10 | Holman Creek from the confluence with Town Branch downstream to the confluence with War Eagle Creek | No domestic water supply use |
OH-3 | 4 | Moccasin Creek below Arkansas Highway 177 | Perennial aquatic life use |
OH-4 | 3 | Curia Creek below first waterfall | Perennial aquatic life use |
OH-4 | 6 | Stennitt Creek from Brushy Creek to Spring River | No domestic water supply use |
SPECIFIC CRITERIA: OZARK HIGHLANDS ECOREGION
(Plates OH-1, OH-2, OH-3, OH-4)
Streams | Lakes and Reservoirs | ||
|---|---|---|---|
Temperature °C (°F) 3 | 29 (84.2) | 32 (89.6) | |
Trout Waters | 20 (68) | ||
Turbidity (NTU) (base/storm) | 10/17 | 25/45 | |
Trout Waters | 10/15 | ||
Minerals | see Rule 2.511 | see Rule 2.511 | |
Dissolved Oxygen 4 | Pri. | Crit | see Rule 2.505 |
<10 mi2 watershed | 6 | 2 | |
10 to 100 mi2 | 6 | 5 | |
>100 mi2 watershed | 6 | 6 | |
Trout Waters | 6 | 6 | |
All other criteria | (same as statewide) | ||
Site Specific Criteria Variations Supported by Use Attainability Analysis
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
OH-1 | 1 | Railroad Hollow Creek from headwaters to Spavinaw Creek | Year-round DO 2 mg/L |
OH-1 | 5 | SWEPCO Reservoir | Maximum temperature 54°C (limitation of 2.8°C above natural temperature does not apply) |
OH-1 | 7 | White River from Noland WWTP to 0.4 miles downstream (WR-02) | Chloride 44 mg/L, sulfate 79 mg/L, TDS 362 mg/L |
OH-1 | 8 | White River from WR-02 to WHI0052 | Chloride 30 mg/L, sulfate 40 mg/L, TDS 237 mg/L |
OH-1 | 9 | Town Branch from point of discharge of the City of Huntsville WWTP Downstream to the confluence with Holman Creek | Chloride 223 mg/L, sulfate 61 mg/L, TDS 779 mg/L |
OH-1 | 10 | Holman Creek from the confluence with Town Branch downstream to the confluence with War Eagle Creek | Chloride 180 mg/L, sulfate 48 mg/L, TDS 621 mg/L |
OH-2 | 7 | Crooked Creek from Harrison WWTP outfall to DEQ Monitoring Station WHI0193 | Chloride 22.6 mg/L, sulfate 24.4 mg/L, TDS 269 mg/L |
OH-3 | 4 | Moccasin Creek below Highway 177 | Critical season DO 5mg/L |
OH-3 | 8 | Crooked Creek from DEQ Monitoring Station WHI0193 to mouth | TDS 238 mg/L |
OH-4 | 3 | Curia Creek below first waterfall | Critical season DO 6 mg/L |
OH-4 | 6 | Stennitt Creek from Brushy Creek to Spring River | TDS 456 mg/L, sulfate 43.3 mg/L |
OH-4 | 11 | Brushy Creek -- from Unnamed Tributary to Stennitt Creek | Sulfate 126 mg/L, TDS 549 mg/L |
OH-4 | 12 | Unnamed Tributary -- from Vulcan Outfall 001 to Brushy Creek | Sulfate 260 mg/L, TDS 725 mg/L |
Plate OH-1 (Ozark Highlands)
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Plate OH-2 (Ozark Highlands)
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Plate OH-3 (Ozark Highlands)
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Plate OH-4 (Ozark Highlands)
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Index to Plates of the Boston Mountains
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DESIGNATED USES: BOSTON MOUNTAINS ECOREGION
(Plates BM-1, BM-2, BM-3)
Extraordinary Resource Waters
Middle and Devils Forks of the Little Red River including Beech Creek, Tomahawk Creek, Turkey Creek, Lick Creek, Raccoon Creek, and Little Raccoon Creek (BM-2, BM-3)
Archey Creek from headwaters to confluence with South Fork Little Red River (BM-2)
Illinois Bayou including North, Middle and East Forks (BM-2)
Big Piney Creek (BM-2)
Hurricane Creek (BM-2)
Mulberry River (BM-1, BM-2)
Lee Creek from state line upstream to headwaters (BM-1)
Salado Creek (BM-3)
Kings River (BM-1)
Richland Creek and Falling Water Creek (BM-2)
Buffalo River (BM-1, BM-2)
Natural and Scenic Waterways
Mulberry River (BM-1, BM-2)
Buffalo River (BM-1, BM-2)
Kings River (BM-1)
Big Piney Creek (BM-2) [FN1]
Hurricane Creek (BM-2) [FN1]
Richland Creek (BM-2) [FN1]
Ecologically Sensitive Waterbodies
Middle, South, and Devils Forks of Little Red River including Beech Creek, Tomahawk Creek, Turkey Creek, Lick Creek, Raccoon Creek, Little Raccoon Creek, and Archey Creek above Greers Ferry Reservoir -- location of endemic yellowcheek darter and endangered speckled pocketbook mussel (except Devils Fork) (BM-2, BM-3)
Foshee Cave -- location of aquatic cave snail (BM-3)
Upper White River -- location of longnose darter (BM-1)
Primary Contact Recreation -- all streams with watersheds of greater than 10 mi2 and all lakes/reservoirs [FN2]
Secondary Contact Recreation -- all waters [FN2]
Domestic, Industrial and Agricultural Water Supply -- all waters [FN2]
Aquatic Life [FN2]
Trout Waters
Greers Ferry Reservoir below Narrows (BM-3)
Little Red River below Greers Ferry Dam (BM-3)
Lakes and Reservoirs -- all
Streams
Seasonal Boston Mountain aquatic life- all waters with watersheds of less than 10 mi2 except as otherwise provided in Rule 2.505
Perennial Boston Mountain aquatic life- all waters with 10 mi2 watershed or larger and those waters where discharges equal or exceed 1 cfs
Use Variations Supported by Use Attainability Analysis
None
SPECIFIC CRITERIA: BOSTON MOUNTAINS ECOREGION
(Plates BM-1, BM-2, BM-3)
Streams | Lakes and Reservoirs | ||
|---|---|---|---|
Temperature °C (°F) 3 | 31 (87.8) | 32 (89.6) | |
Trout Waters | 20 (68) | ||
Turbidity (NTU) (base/storm) | 10/19 | 25/45 | |
Trout Waters | 10/15 | ||
Minerals | see Rule 2.511 | see Rule 2.511 | |
Dissolved Oxygen (mg/L) 4 | Pri. | Crit | see Rule 2.505 |
<10 mi2 watershed | 6 | 2 | |
10 mi2 and greater | 6 | 6 | |
Trout Waters | 6 | 6 | |
All other criteria | (same as statewide) | ||
Site Specific Criteria Variations Supported by Use Attainability Analysis
None
Plate BM-1 (Boston Mountains)
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Plate BM-2 (Boston Mountains)
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Plate BM-3 (Boston Mountains)
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Index to Plates of the Arkansas River Valley
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DESIGNATED USES: ARKANSAS RIVER VALLEY ECOREGION
(Plates ARV-1, ARV-2, ARV-3)
Extraordinary Resource Waters
Cadron Creek including North Fork and East Fork (ARV-2, ARV-3)
Mulberry River (ARV-1)
Big Creek adjacent to natural areas (ARV-3)
Natural and Scenic Waterway
Mulberry River (ARV-1)
Ecologically Sensitive Waterbodies
None
Primary Contact Recreation -- all streams with watersheds of greater than 10 mi2 and all lakes/reservoirs [FN2]
Secondary Contact Recreation -- all waters [FN2]
Domestic, Industrial and Agricultural Water Supply -- all waters [FN2]
Aquatic Life [FN2]
Trout Waters
Little Red River below Greers Ferry Dam to Searcy (ARV-3)
Lakes and Reservoirs -- all
Streams
Seasonal Arkansas River Valley aquatic life use -- all streams with watersheds of less than 10 mi2 except as otherwise provided in Rule 2.505
Perennial Arkansas River Valley aquatic life -- all streams with watersheds of 10 mi2 or larger and those waters where discharges equal or exceed 1 cfs
Site Specific Designated Use Variations Supported by Use Attainability Analysis
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
ARV-1 | 2 & 4 | Poteau River from U.S. Business Highway 71 to Oklahoma state line | No domestic water supply use |
ARV-1 | 3 | Unnamed tributary to Poteau River at Waldron | No domestic water supply use |
SPECIFIC CRITERIA: ARKANSAS RIVER VALLEY ECOREGION
(Plates ARV-1, ARV-2, ARV-3)
Streams | Lakes and Reservoirs | ||
|---|---|---|---|
Temperature °C (°F) 3 | 31 (87.8) | 32 (89.6) | |
Trout Waters | 20 (68) | ||
Arkansas River | 32 (89.6) | ||
Turbidity (NTU) (base/storm) | 21/40 | 25/45 | |
Arkansas River | 50/52 | ||
Trout Waters | 10/15 | ||
Minerals | see Rule 2.511 | see Rule 2.511 | |
Dissolved Oxygen (mg/L) 4 | Pri. | Crit. | see Rule 2.505 |
<10 mi2 watershed | 5 | 2 | |
10 to 150 mi2 | 5 | 3 | |
151 mi2 to 400 mi2 | 5 | 4 | |
>400 mi2 watershed | 5 | 5 | |
Trout waters | 6 | 6 | |
All other criteria | (same as statewide) | ||
Site Specific Criteria Variations Supported by Use Attainability Analysis
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
ARV-2 | 1 | Dardanelle Reservoir | Maximum temperature 35°C (95°F) (limitation of 2.8°C above natural temperature does not apply) |
ARV-1 | 2 | Poteau River from Scott County Road 59 to Oklahoma state line | Chlorides 120 mg/L, sulfates 60 mg/L, TDS 500 mg/L |
ARV-1 | 4 | Poteau River from confluence with Unnamed tributary to Scott County Road 59 | Chlorides 185 mg/L, sulfates 200 mg/L, TDS 786 mg/L |
ARV-1 | 3 | Unnamed tributary from Tyson-Waldron Outfall 001 to confluence with the Poteau River | Chlorides 180 mg/L, sulfates 200 mg/L, TDS 870 mg/L |
Plate ARV-1 (Arkansas River Valley)
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Plate ARV-2 (Arkansas River Valley)
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Plate ARV-3 (Arkansas River Valley)
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Index to Plates of the Ouachita Mountains
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DESIGNATED USES: OUACHITA MOUNTAIN ECOREGION
(Plates OM-1, OM-2)
Extraordinary Resource Waters
Lake Ouachita (OM-1, OM-2)
DeGray Reservoir (OM-2)
Saline River -- entire segment including North, Alum, Middle and South Forks (OM-2)
Caddo River -- above DeGray Reservoir (OM-1, OM-2)
South Fork Caddo River (OM-1)
Cossatot River -- above Gillham Reservoir (OM-1)
Caney Creek (OM-1)
Little Missouri River -- above Lake Greeson (OM-1)
Mountain Fork River (OM-1)
Big Fork Creek -- adjacent to natural area (OM-1)
Natural and Scenic Waterway
Cossatot River above Gillham Reservoir (OM-1)
Little Missouri River above Lake Greeson (OM-1)
Brushy Creek (OM-1) [FN1]
Ecologically Sensitive Waterbodies
Ouachita River above Lake Ouachita -- location of Caddo madtom, longnose darter, peppered shiner and threatened
Arkansas fatmucket Mussel (OM-1)
South Fork Ouachita River -- location of Arkansas fatmucket mussel and Caddo madtom (OM-1)
Caddo River and all tributaries above DeGray Reservoir -- location of endemic paleback darter, Caddo madtom and threatened Arkansas fatmucket mussel (OM-1, OM-2)
Mountain Fork River -- location of threatened leopard darter (OM-1)
Cossatot River above Gillham Reservoir -- location of threatened leopard darter (OM-1)
Saline River including Alum, Middle, North and South Forks, and Ten Mile Creek -- location of endemic Ouachita madtom and threatened Arkansas fatmucket mussel (except South fork and Ten Mile Creek) (OM-2)
Little Missouri River above Lake Greeson -- location of Caddo madtom
Mayberry Creek (tributary to Hallman's Creek) -- location of paleback darter (OM-2)
Robinson Creek -- location of threatened leopard darter (OM-1)
Primary Contact Recreation -- all streams with watersheds of greater than 10 mi2 and all lakes/reservoirs [FN2]
Secondary Contact Recreation -- all waters [FN2]
Domestic, Industrial and Agricultural Water Supply -- all waters [FN2]
Aquatic Life [FN2]
Trout Waters
Lake Ouachita (lower portion) (OM-2)
Ouachita River from Blakely Mt. Dam to Hwy. 270 bridge (OM-2)
Lakes and Reservoirs -- all
Aquatic Life [FN2]
Streams
Seasonal Ouachita Mountain Ecoregion aquatic life -- all streams with watersheds of less than 10 mi2 except as otherwise provided in Rule 2.505
Perennial Ouachita Mountain Ecoregion aquatic life -- all streams with watershed of 10 mi2 or larger and those waters where discharges equal or exceed 1cfs
Site Specific Designated Use Variations Supported by Use Attainability Analysis
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
OM-1 | 2 | Rolling Fork from unnamed tributary A at Grannis to DeQueen Reservoir | No domestic water supply use |
OM-1 | 3 | Unnamed tributaries A and A1 at Grannis | No domestic water supply use |
SPECIFIC CRITERIA: OUACHITA MOUNTAIN ECOREGION
(Plates OM-1, OM-2)
Streams | Lakes and Reservoirs | ||
|---|---|---|---|
Temperature °C (°F) 3 | 30 (86) | 32 (89.6) | |
Trout Waters | 20 (68) | ||
Turbidity (NTU) (base/storm) | 10/18 | 25/45 | |
Trout Waters | 10/15 | ||
Minerals | see Rule 2.511 | see Rule 2.511 | |
Dissolved Oxygen (mg/L) 4 | Pri. | Crit | see Rule 2.505 |
<10 mi2 watershed | 6 | 2 | |
10 mi2 and greater | 6 | 6 | |
Trout Waters | 6 | 6 | |
All other criteria | (same as statewide) | ||
Site Specific Criteria Variations Supported by Use Attainability Analysis
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
OM-1 | 1 | Prairie Creek: from headwaters to confluence with Briar Creek | Critical season DO 4 mg/L |
OM-1 | 2 | Rolling Fork from unnamed tributary A to DeQueen Reservoir | Chlorides 130 mg/L, sulfates 70 mg/L, TDS 670 mg/L |
OM-1 | 3 | Unnamed tributaries A and A1 at Grannis | Chlorides 135 mg/L, sulfates 70 mg/L, TDS 700 mg/L |
OM-1 | 4 | South Fork Caddo River | Sulfates 60 mg/L |
OM-1 | 5 | Back Valley Creek | Sulfates 250 mg/L, TDS 500 mg/L |
OM-2 | 6 | Wilson Creek from a point approximately 0.85 mile upstream of Outfall 001 to UMETCO Outfall 001 | Chlorides 56 mg/L, sulfates 250 mg/L, TDS 500 mg/L |
OM-2 | 7 | Wilson Creek downstream of UMETCO Outfall 001 to its mouth | Chlorides 56 mg/L, sulfates 250 mg/L, TDS 500 mg/L |
Temporary Variations Supported by Environmental Improvement Project
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
OM-2 | 1 | Chamberlain Creek from headwaters to confluence with Cove Creek | Chlorides 68 mg/L, sulfates 1,384 mg/L, TDS 2,261 mg/L 5 |
OM-2 | 2 | Cove Creek from the confluence with Chamberlain Creek to the Ouachita River | Sulfates 250 mg/L, TDS 500 mg/L 5 |
OM-2 | 3 | Lucinda Creek from the confluence of Rusher Creek to the confluence with Cove Creek | Sulfates 250 mg/L, TDS 500 mg/L 5 |
OM-2 | 4 | Rusher Creek from the confluence of the East and West Forks to confluence with Lucinda Creek | Sulfates 250 mg/L, TDS 500 mg/L 5 |
Plate OM-1 (Ouachita Mountains)
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Plate OM-2 (Ouachita Mountains)
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Index to Plates of the Gulf Coastal Plain
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DESIGNATED USES: GULF COASTAL ECOREGION
(Plates GC-1, GC-2, GC-3, GC-4)
Extraordinary Resource Waters
Saline River (GC-3, GC-4)
Moro Creek -- adjacent to natural area (GC-2)
Natural and Scenic Waterways
Saline River from the Grant-Saline County line to mouth (GC-3)
Ecologically Sensitive Waterbodies
Little River above Millwood Reservoir -- location of Ouachita rock pocketbook and pink mucket mussels (GC-1)
Grassy Lake and Yellow Creek below Millwood Reservoir -- unique ecosystem and biota (GC-1)
Lower Little Missouri River -- location of peppered shiner and longnose darter (GC-2)
Lower Saline River -- location of peppered shiner, crystal darter and goldstripe darter (GC-3)
Ouachita River near Arkadelphia -- location of flat floater, Ouachita rock pocketbook and pink mucket mussels (GC-4)
Streams with Substantial Springwater Influence
L'Eau Frais (GC-4)
Cypress Creek (GC-4)
East and West Fork Tulip Creeks (GC-4)
Others to be determined
Primary Contact Recreation -- all streams with watersheds greater than 10 mi2 and all lakes/reservoirs [FN2]
Secondary Contact Recreation -- all waters [FN2]
Domestic, Industrial, and Agricultural Water Supply -- all waters [FN2]
Aquatic Life [FN2]
Trout Waters
Little Missouri River from Narrows Dam to confluence with Muddy Fork (GC-1)
Lakes and Reservoirs -- all
Streams
Seasonal Gulf Coastal aquatic life -- all streams with watersheds of less than 10 mi2 except as otherwise provided in Rule 2.505
Perennial Gulf Coastal aquatic life -- all streams with watersheds of 10 mi2 or larger and those waters where discharges equal or exceed 1 cfs
Site Specific Designated Use Variations Supported by Use Attainability Analysis
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
GC-1 | 7 | Lick Creek | Seasonal aquatic life use; no primary contact |
GC-1 | 9 | Red River from Oklahoma state line to confluence with Little River | No domestic water supply use |
GC-1 | 10 | Bluff Creek and unnamed tributary | No domestic water supply use |
GC-1 | 11 | Mine Creek from Highway 27 to Millwood Lake | No domestic water supply use |
GC-1 | 12 | Caney Creek | No domestic or industrial water supply use |
GC-1 | 13 | Bois d'Arc Creek from Caney Creek to Red River | No domestic or industrial water supply use |
GC-1 | 55 | Red River from the mouth of the Little River to the Arkansas/Louisiana state line | No domestic water supply use |
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
GC-2 | 1 | Loutre Creek | Perennial aquatic life use, except seasonal from railroad bridge to mouth |
GC-2 | 2 | Unnamed tributary to Smackover Creek | No fishable/swimmable uses |
GC-2 | 4 | Unnamed tributary to Flat Creek | No fishable/swimmable uses |
GC-2 | 6 | Jug Creek | Perennial aquatic life use |
GC-2 | 15 | Gum Creek | No domestic water supply use |
GC-2 | 16 | Bayou de Loutre from mouth of UT004 to Louisiana state line | No domestic water supply use |
GC-2 | 17 | Walker Branch | No domestic water supply use |
GC-2 | 18 | Little Cornie Bayou from Walker Branch to Arkansas/Louisiana state line | No domestic water supply use |
GC-2 | 18 | Unnamed tributary to Little Cornie Bayou (UTLCB-2) | No domestic water supply use |
GC-2 | 27 | Albemarle unnamed tributary (AUT) to Horsehead Creek | No domestic water supply use |
GC-2 | 27 | Horsehead Creek from AUT to mouth | No domestic water supply use |
GC-2 | 28 | Dismukes Creek and Big Creek to Bayou Dorcheat | No domestic water supply use |
GC-2 | 31 | Unnamed tributary 002 (UT002) | No domestic water supply use |
GC-2 | 32 | Unnamed tributary 004 (UT004) | No domestic water supply use |
GC-2 | 34 | Unnamed tributary 003 (UT003) | No domestic water supply use |
GC-2 | 37 | Unnamed tributary to Flat Creek from EDCC Outfall 001 downstream to confluence with unnamed tributary A to Flat Creek | No domestic water supply use |
GC-2 | 38 | Unnamed tributary A to Flat Creek from mouth of EDCC 001 ditch to confluence with Flat Creek | No domestic water supply use |
GC-2 | 39 | Flat Creek from mouth of UTA to confluence with Haynes Creek | No domestic water supply use |
GC-2 | 40 | Haynes Creek from mouth of Flat Creek to confluence with Smackover Creek | No domestic water supply use |
GC-2 | 41 | Loutre Creek from Highway 15 S. to the confluence of Bayou de Loutre | No domestic water supply use |
GC-2 | 51 | Boggy Creek from the discharge from Clean Harbors El Dorado LCC downstream to the confluence of Bayou de Loutre | No domestic water supply use |
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
GC-3 | 8 | Coffee Creek and Mossy Lake | No fishable/swimmable or domestic water supply uses |
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
GC-4 | 5 | Dodson Creek | Perennial aquatic life use |
GC-4 | 14 | Town Creek below Acme tributary | No domestic water supply use |
GC-4 | 14 | Unnamed tributary from Acme | No domestic water supply use |
GC-4 | 19 | Alcoa unnamed tributary to Hurricane Creek and Hurricane Creek | No domestic water supply use |
GC-4 | 20 | Holly Creek | No domestic water supply use |
GC-4 | 21 | Dry Lost Creek and tributaries | No domestic water supply use |
GC-4 | 22 | Lost Creek | No domestic water supply use |
SPECIFIC CRITERIA: GULF COASTAL ECOREGION
(Plates GC-1, GC-2, GC-3, GC-4)
Typical Streams | Spring Water Streams | Lakes and Reservoirs | ||
|---|---|---|---|---|
Temperature °C (°F) 3 | 30 (86) | 30 (86) | 32 (89.6) | |
Ouachita River | ||||
(state line to Little Missouri River) | 32 (89.6) | |||
Red River | 32 (89.6) | |||
Little River | ||||
(from Millwood Lake to the Red River) | 32 (89.6) | |||
Trout Waters | 20 (68) | 20 (68) | ||
Turbidity (NTU) (base/storm) | 21/32 | 21/32 | 25/45 | |
Red River | 50/150 | |||
Trout Waters | 10/15 | |||
Minerals | see Rule 2.511 | see Rule 2.511 | ||
Dissolved Oxygen (mg/L) 4 | Pri. | Crit. | see Rule 2.505 | |
<10 mi2 watershed | 5 | 2 | ||
10 mi2 -- 500 mi2 | 5 | 3 | ||
>500 mi2 watershed | 5 | 5 | ||
All sizes (springwater influenced) | 6 | 5 | ||
Trout Waters | 6 | 6 | ||
All other criteria | (same as statewide) | |||
Site Specific Criteria Variations Supported by Use Attainability Analysis
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
GC-1 | 7 | Lick Creek -- from headwaters to Millwood Reservoir | Critical season DO 2 mg/L |
GC-1 | 9 | Red River from Oklahoma state line to confluence with Little River | TDS 850 mg/L |
GC-1 | 10 | Bluff Creek and unnamed tributary | Sulfates 651 mg/L, TDS 1033 mg/L |
GC-1 | 11 | Mine Creek from Highway 27 to Millwood Lake | Chlorides 90 mg/L, sulfates 65 mg/L, TDS 700 mg/L |
GC-1 | 12 | Caney Creek | Chlorides 113 mg/L, sulfates 283 mg/L, TDS 420 mg/L |
GC-1 | 24 | Muddy Fork Little Missouri River | Sulfates 250 mg/L, TDS 500 mg/L |
GC-1 | 25 | Little Missouri River | Sulfates 90 mg/L, TDS 180 mg/L |
GC-1 | 30 | Unnamed tributary of Lake June below Entergy Couch Plant to confluence with Lake June | Maximum water temperature 95 degrees F (limitation of 5 degrees above natural temperature does not apply) |
GC-1 | 55 | Red River from mouth of the Little River to the Arkansas/Louisiana state line | TDS 780 mg/L |
GC-1 | 56 | Little River from Millwood Lake to the Red River | TDS 138mg/L; temperature 32°C/89.6°F |
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
GC-2 | 1 | Loutre Creek from headwaters to railroad bridge | Critical season DO 3 mg/L, primary season DO 5 mg/L |
GC-2 | 1 | Loutre Creek from railroad bridge to mouth | Critical season DO 2 mg/L |
GC-2 | 2 | Unnamed tributary to Smackover Creek headwaters to Smackover Creek | Year round DO 2 mg/L |
GC-2 | 4 | Unnamed tributary to Flat Creek from headwaters to Flat Creek | Year round DO2 mg/L |
GC-2 | 6 | Jug Creek -- from headwaters to confluence with Moro Creek | Critical season DO 3 mg/L |
GC-2 | 15 | Gum Creek | Chlorides 104 mg/L, TDS 311 mg/L |
GC-2 | 16 | Bayou de Loutre from Gum Creek to State line | Chlorides 250 mg/L, TDS 750 mg/L |
GC-2 | 17 | Walker Branch | Chlorides 180 mg/L, TDS 970 mg/L |
GC-2 | 27 | Albemarle unnamed tributary (AUT) to Horsehead Creek | Chlorides 137 mg/L, TDS 383 mg/L |
GC-2 | 27 | Horsehead Creek from AUT to mouth | Chlorides 85 mg/L, TDS 260 mg/L |
GC-2 | 27 | Bayou Dorcheat | Sulfates 16 mg/L |
GC-2 | 28 | Dismukes Creek | Chlorides 26 mg/L, TDS 157 mg/L |
GC-2 | 28 | Big Creek from Dismukes to Bayou Dorcheat | Chlorides 20 mg/L, TDS 200 mg/L |
GC-2 | 29 | Bayou de Loutre from Chemtura outfall to Loutre Creek | Maximum water temperature 96°F |
GC-2 | 51 | Boggy Creek from the discharge from Clean Harbors El Dorado LCC downstream to the confluence of Bayou de Loutre. | Chloride 631mg/L, Sulfate 63 mg/L, TDS 1360 mg/L, Selenium 15.6 u/L |
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
GC-3 | 8 | Coffee Creek and Mossy Lake | Exempt from Rule 2.406 and Chapter Five |
GC-3 | 26 | Ouachita River from Ouachita River mile (ORM) 223 to the Arkansas-Louisiana border (ORM 221.1) | Site specific seasonal DO criteria: 3 mg/L June and July; 4.5 mg/L August; 5 mg/L September through May. These seasonal criteria may be unattainable during or following naturally occurring high flows, (i.e., river stage above 65 feet measured at the lower gauge at the Felsenthal Lock and Dam, Station No.89-o, and also for the two weeks following the recession of flood waters below 65 feet), which occurs from May through August. Naturally occurring conditions which fail to meet criteria should not be interpreted as violations of these criteria |
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
GC-4 | 5 | Dodson Creek -- from headwaters to confluence with Saline River | Critical season DO 3 mg/L |
GC-4 | 14 | Town Creek below Acme tributary | Sulfates 200 mg/L, TDS 700 mg/L |
GC-4 | 14 | Unnamed tributary from Acme | Sulfates 330 mg/L, TDS 830 mg/L |
GC-4 | 19 | Alcoa unnamed tributary to Hurricane Creek and Hurricane Creek | See Rule 2.511 |
GC-4 | 20 | Holly Creek | See Rule 2.511 |
GC-4 | 23 | Saline River bifurcation | See Rule 2.511 |
GC-4 | 21 | Dry Lost Creek and tributaries | See Rule 2.511 |
GC-4 | 22 | Lost Creek | See Rule 2.511 |
GC-4 | 52 | McGeorge Creek (headwaters to Willow Springs Branch) | Sulfate 250 mg/L, TDS 432 mg/L |
GC-4 | 53 | Willow Springs Branch (McGeorge Creek to Little Fourche Creek) | Sulfate 112 mg/L, TDS 247 mg/L |
GC-4 | 54 | Little Fourche Creek (Willow Springs Branch to Fourche Creek) | TDS 179 mg/L |
Temporary Variations Supported by Environmental Improvement Project
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
GC-4 | 1 | Holly Creek | Selenium chronic criteria 17μg/L |
GC-4 | 2 | Reyburn Creek from headwaters to confluence of Francois Creek | Sulfates 250 mg/L, TDS 500 mg/L 5 |
GC-4 | 3 | Scull Creek from a point approximately 350 feet upstream of Clearwater Lake to Clearwater Lake (including Clearwater Lake) and from Clearwater Lake dam to confluence Reyburn Creek | Sulfates 250 mg/L, TDS 500 mg/L 5 |
Plate GC-1 (Gulf Coastal Plain)
)
Plate GC-2 (Gulf Coastal Plain)
)
Plate GC-3 (Gulf Coastal Plain)
)
Plate GC-4 (Gulf Coastal Plain)
)
Index to Plates of the Delta
)
DESIGNATED USES: DELTA ECOREGION
(Plates D-1, D-2, D-3, D-4, D-5)
Extraordinary Resource Waters
Second Creek (D-4)
Cache River above Cache Bayou -- adjacent to natural areas (D-3)
Arkansas River below Norrell Lock and Dam (Dam #2) (D-5)
Strawberry River (D-1)
Two Prairie Bayou adjacent to natural areas (D-3)
Natural and Scenic Waterways
None
Ecologically Sensitive Waterbodies
Lower St. Francis River and lower 10 miles of Straight Slough -- location of fat pocketbook mussel (D-2, D-4)
Right Hand Chute at confluence with St. Francis River -- location of fat pocketbook mussel (D-2)
Departee Creek -- location of flat floater mussel (D-1)
Black River at mouth of Spring River -- location of pink mucket mussel (D-1)
Channel-altered Delta Ecoregion Streams -- These include the majority of the streams in this ecoregion and are characterized by substantial alteration of the morphology of their main-stream channel as well as their tributary streams. Such alteration of the tributaries of these streams significantly affects the water quality and hydrology of the streams and their watersheds. Most of the upper segments of these waters have been dredged and straightened into ditches. Additionally most of the tributaries of these streams have been straightened, ditched and, in some cases, rerouted to quickly move water off the agriculture fields and into the major streams. In the lower segments of these waters, channel realignment is less expansive but most of these channels have been “snagged” to remove any in-stream obstructions (brush, logs, and other debris) and the stream channel and banks have been dredged to uniform depths and cleared of any obstructions. These include Cache River, Bayou DeView, Village Creek, Blackfish Bayou and others to be determined by the Division on a case by case basis.
Primary Contact Recreation -- all streams with watersheds of greater than 10 mi2 and all lakes/reservoirs [FN2]
Secondary Contact Recreation -- all waters [FN2]
Domestic, Industrial and Agricultural Water Supply -- all waters [FN2]
Aquatic Life [FN2]
Trout Waters -- none
Lakes and Reservoirs -- all
Streams
Seasonal Delta aquatic life -- all streams with watersheds of less than 10 mi2 except as otherwise provided in Rule 2.505
Perennial Delta aquatic life -- all streams with watersheds 10 mi2 or larger and those waters where discharges equal or exceed 1cfs
Site Specific Designated Use Variation Supported by Use Attainability Analysis
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
D-1 | 3 | Coon Creek and unnamed tributary from Frit Ind. | No domestic water supply use |
D-2 | 5 | Ditch No. 27 | No domestic water supply use |
D-2 | 6 | Ditch No. 6 | No domestic water supply use |
D-3 | 1 | Unnamed ditch to Little LaGrue Bayou | Perennial Delta aquatic life |
D-5 | 2 | Little Lake Bayou | Seasonal Delta aquatic life, no primary contact |
D-3 | 4 | Rocky Branch Creek and Bayou Meto from Rocky Branch Creek to Bayou Two Prairie | No domestic water supply use |
SPECIFIC CRITERIA: DELTA ECOREGION
(Plates D-1, D-2, D-3, D-4, D-5)
Least-Altered Streams | Channel-Altered Streams | Lakes and Reservoirs | |||
|---|---|---|---|---|---|
Temperature °C (°F) 3 | 30 (86) | 32 (89.6) | 32 (89.6) | ||
White River | 32 (89.6) | ||||
St. Francis River | 32 (89.6) | ||||
Mississippi River | 32 (89.6) | ||||
Arkansas River | 32 (89.6) | ||||
Turbidity (NTU) (base/storm) | 45/84 | 75/250 | 25/45 | ||
Arkansas River | 50/52 | ||||
Mississippi River | 50/75 | ||||
St. Francis River | 75/100 | ||||
Minerals | see Rule 2.511 | see Rule 2.511 | see Rule 2.511 | ||
Dissolved Oxygen (mg/L) 4 | Pri | Crit | Pri | Crit. | see Rule 2.505 |
<10 mi2 watershed | 5 | 2 | 5 | 2 | |
10 mi2 to 100 mi2 | 5 | 3 | 5 | 3 | |
>100 mi2 watershed2 | 5 | 5 | 5 | 5 | |
All other criteria | (same as statewide) | ||||
Site Specific Criteria Variations Supported by Use Attainability Analysis
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
D-1 | 3 | Unnamed tributary from Frit Ind., to Coon Creek | Sulfates 48 mg/L |
D-1 | 38 | Unnamed tributary to Big Creek | Chlorides 71 mg/L, sulfates 60 mg/L, TDS 453 mg/L |
D-1 | 39 | Big Creek from Whistle Ditch to mouth of unnamed tributary | Chloride 58 mg/L, sulfates 49 mg/L |
D-1 | 40 | Bayou DeView from AR Hwy 14 to Whistle Ditch | Chloride 48 mg/L, sulfates 38 mg/L, TDS 411.3 mg/L |
D-1 | 41 | Bayou DeView from mouth to AR Hwy 14 | Chloride 48 mg/L, sulfates 37.3 mg/L, TDS 411.3 mg/L |
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
D-2 | 5 | Ditch No. 27 | Sulfates 480 mg/L, TDS 1,200 mg/L, maximum water temperature 95°F |
D-2 | 6 | Ditch No. 6 from Ditch No. 27 confluence to its mouth | Sulfates 210 mg/L, TDS 630 mg/L |
D-2 | 7 | Tyronza River from Ditch No. 6 confluence to its mouth | Sulfates 60 mg/L. See Rule 2.511 |
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
D-3 | 1 | Unnamed ditch to Little LaGrue Bayou -- from headwaters to confluence with Little LaGrue Bayou | Critical season DO 3 mg/L |
D-3 | 4 | Rocky Branch Creek | Chlorides 64 mg/L |
D-3 | 4 | Bayou Meto (Rocky Branch to Pulaski/Lonoke county line) | Chlorides 64 mg/L |
D-3 | 4 | Bayou Meto from mouth to Pulaski/Lonoke county line | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 6 | Bakers Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 8 | Big Ditch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 9 | Crooked Creek Ditch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 10 | Caney Creek Ditch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 10 | Caney Creek | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 11 | Shumaker Branch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 12 | Flat Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 13 | Snow Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 14 | Fish Trap Slough | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 15 | Main Ditch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 16 | Dennis Slough | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 17 | Bradley Slough | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 18 | Flynn Slough | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 19 | Boggy Slough | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 20 | Bear Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 21 | Bubbling Slough | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 22 | Government Cypress Slough | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 23 | Brushy Slough | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 24 | Hurricane Slough | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 25 | Newton Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 26 | Castor Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 27 | Wabbaseka Bayou | Chlorides 95 mg/L, sulfates 45mg/L |
D-3 | 28 | Indian Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 29 | Salt Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 29 | Salt Bayou Ditch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 30 | Plum Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 31 | Indian Bayou Ditch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 32 | Buffalo Slough | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 33 | Five Forks Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 34 | Little Bayou Meto | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 35 | Brownsville Branch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 36 | Tupelo Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 37 | Eagle Branch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 38 | Tipton Ditch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 39 | West Bayou | Chlorides 95 mg/L, sulfates 45mg/L |
D-3 | 40 | Long Pond Slough | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 41 | Cross Bayou | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 42 | Bayou Two Prairie (Pulaski/ Lonoke county line to Northern boundary of Smoke Hole Natural Area) | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 42 | Bayou Two Prairie (Southern boundary of Smoke Hole Natural Area to Mouth) | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 43 | Skinner Branch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 44 | White Oak Branch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 45 | Ricky Branch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 46 | Blue Point Ditch | Chlorides 95 mg/L, sulfates 45 mg/L |
D-3 | 47 | Bayou DeView from mouth to AR Hwy 14 | Chloride 48 mg/L, sulfates 37.3 mg/L, TDS 411.3mg/L |
Plate | Map Inset | Waterbody | Variation |
|---|---|---|---|
D-5 | 2 | Little Lake Bayou | Critical season DO 2 mg/L |
Plate D-1 (Delta)
)
Plate D-2 (Delta)
)
Plate D-3 (Delta)
)
Plate D-4 (Delta)
)
Plate D-5 (Delta)
)
Credits
Amended Aug. 26, 2010; Oct. 29, 2010; Jan. 23, 2011; Sept. 26, 2011; Nov. 14, 2015; Feb. 25, 2017; Sept. 16, 2017; Sept. 29, 2017; Jan. 20, 2019; Aug. 12, 2019; Feb. 13, 2020; May 7, 2022.
As designated in the National Wild and Scenic Rivers System
Except for those waters with designated use variations supported by Use Attainability Analysis or other investigations.
Increase over natural temperatures may not be more than 2.8°C (5°F).
At water temperatures ≤ 10°C or during March, April and May when stream flows are 15 cfs and greater, the primary season dissolved oxygen standard will be 6.5 mg/L. When water temperatures exceed 22°C, the critical season dissolved oxygen standard may be depressed by 1 mg/L for no more than 8 hours during a 24-hour period.
These temporary standards variations are effective for 148 months from EPA's approval of the EIP on January 7, 2020.
Current with amendments received through February 15, 2024. Some sections may be more current, see credit for details.
Ark. Admin. Code 118.01.2 App. A, AR ADC 118.01.2 App. A
| End of Document |