2022 303(d) list Catagory 1b Draft (2)
2022 303(d) list Catagory 4a Draft (3)
2022 303(d) list Catagory 4b Draft (4)
2022 303(d) list Catagory 5 Draft (5)
2022 303(d) list Catagory 5 alt Draft (6)
2022 303(d) list Catagory 4a Lakes Draft (7)
2022 303(d) list Catagory 5 alt Lakes Draft (8)
2022 303(d) list Catagory 5 Lakes Draft (9)
Cat_1b_Streams_2020 (11)
Cat_4a_Streams_2020 (12)
Cat_4a_Lakes_2020 (13)
Cat_4b_2020 (14)
Cat_5alt_Streams_2020 (15)
Cat_5alt_Lakes_2020 (16)
Cat_5_Streams_2020 (17)
Cat_5_Lakes_2020 (18)
Flow Direction (19)
Mercury Advisory (Lakes) (20)
Mercury Advisory (Counties) (21)
Mercury Advisory (Rivers) (22)
Counties (23)
States Surround (24)
Water Quality Monitoring Station (26)
NPDES (27)
Permitted Sites (28)
Fish Data (29)
Macroinvertebrates (30)
Mercury in fish sampling data (31)
State Permits Branch (32)
Flow Direction (33)
Hydrologic Unit Code (HUC8) (34)
DEQ Planning Segments (35)
Ecoregions (Omernik – Level 4 Based) (36)
| Arkansas River Valley |
| Boston Mountains |
| Delta |
| Gulf Coastal Plain |
| Ouachita Mountains |
| Ozark Highlands |
Ecoregions – Regulation No. 2 boundaries (37)
|
| Arkansas River Valley |
|
| Boston Mountains |
|
| Delta |
|
| Gulf Coastal Plain |
|
| Ouachita Mountains |
|
| Ozark Highlands |
BASE_STREAMS_2024_final (38)
BASE_LAKES_2024_final (39)
Counties (40)
States Surround (41)
Ecologically Sensitive Waterbodies (ESW - Streams) (43)
Hydrologic Unit Code (HUC8) (44)
DEQ Planning Segments (45)
Ecologically Sensitive Waterbodies (SW - springs & seeps (46)
Engineering Institutional Controls (47)
Extraordinary Resource Waters Lakes (48)
Use Attainability Analysis Segments (49)
Trout Streams (50)
Extraordinary Resource Waters (ERW) (51)
Flow_Direction (52)
Natural and Scenic Waterways (NSW) (53)
Trout Lakes (54)
Nutrient Surplus Areas (ANRC) (55)
Buffalo National River Watershed (56)
Lake Maumelle Watershed (57)
Ecoregions (Omernik – Level 4 Based) (58)
|
| Arkansas River Valley |
|
| Boston Mountains |
|
| Delta |
|
| Gulf Coastal Plain |
|
| Ouachita Mountains |
|
| Ozark Highlands |
Ecoregions – Regulation No. 2 boundaries (59)
|
| Arkansas River Valley |
|
| Boston Mountains |
|
| Delta |
|
| Gulf Coastal Plain |
|
| Ouachita Mountains |
|
| Ozark Highlands |
Counties (60)
States Surround (61)
|
