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Assessment Data for the State of Wyoming Year 2004
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State of Wyoming websites: | No State 305(b) Water Quality Assessment Report is available. |
| State Water Quality Program |
Search for a Waterbody within Wyoming
Total Assessed Waters for the State of Wyoming
Description of this table| Size Of Water | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rivers, Streams, Creeks (Miles) | Lakes, Ponds, Reservoir (Acres) | Bays, Estuaries (Square Miles) | Coastal Shorelines (Miles) | Oceans, Near Coastal Waters (Square Miles) | Wetlands (Acres) | Great Lakes Shoreline (Miles) | Great Lakes Open Water (Square Miles) | Inland Lake Shoreline (Miles) | |
| Total Assessed Waters | 5,903.05 | 6,237.60 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| Estimated Total Water Size in WY | 108,767.00 | 325,048.00 | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable |
| Percent of Waters Assessed | 5.43 | 1.92 | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable |
Assessed Waters of Wyoming by Watershed (8 Digit USGS Cataloging Unit)
Description of this table| Watershed | Size of Water | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rivers, Streams, Creeks (Miles) | Lakes, Ponds, Reservoir (Acres) | Bays, Estuaries (Square Miles) | Coastal Shorelines (Miles) | Oceans, Near Coastal Waters (Square Miles) | Wetlands (Acres) | Great Lakes Shoreline (Miles) | Great Lakes Open Water (Square Miles) | Inland Lake Shoreline (Miles) | |
| 8-digit HUC Name Not Reported | 211.52 | 1.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| BEAVER | 2.42 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| BIG HORN LAKE | 34.14 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| BITTER | 23.06 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| BLACKS FORK | 148.68 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CENTRAL BEAR | 258.63 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CLARKS FORK YELLOWSTONE | 8.75 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CLEAR | 329.58 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CRAZY WOMAN | 220.36 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CROW | 22.47 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| DRY | 4.43 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| GREYBULL | 7.47 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| GREYS-HOBOCK | 9.95 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HORSE | 359.18 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LITTLE POWDER | 6.23 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LITTLE SNAKE | 155.64 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER LARAMIE | 130.38 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER WIND | 7.35 | 6,075.80 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MEDICINE BOW | 190.99 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MIDDLE FORK POWDER | 158.59 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MIDDLE NORTH PLATTE-CASPER | 98.58 | 145.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MUDDY | 63.46 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NORTH FORK SHOSHONE | 754.33 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NOWOOD | 17.47 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| POPO AGIE | 70.67 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SALT | 12.27 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SALT | 21.38 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SHOSHONE | 46.85 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SNAKE HEADWATERS | .77 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SWEETWATER | 5.49 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER BEAR | 232.08 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER BELLE FOURCHE | 126.15 | 15.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER BIGHORN | 180.28 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER GREEN | 701.45 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER LARAMIE | 243.52 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER NORTH PLATTE | 591.15 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER POWDER | 242.26 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER TONGUE | 212.54 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
Wyoming Assessed Waters
Individual Use Support for Rivers and Streams
Description of this table
| State Designated Use | Total Miles Assessed | Percent Good | Percent Threatened | Percent Impaired |  % Good |
|---|---|---|---|---|---|
 % Threatened |
|||||
 % Impaired |
|||||
| AGRICULTURE | 32.26 | .00 | .00 | 100.00 | |
| AQUATIC LIFE OTHER THAN FISH | 5,253.48 | 88.60 | 5.23 | 6.18 | |
| DRINKING WATER | 15.59 | .00 | .00 | 100.00 | |
| FISHERIES | 4,878.53 | 89.69 | 3.95 | 6.36 | |
| RECREATION | 614.74 | .00 | 18.44 | 81.56 | |
| WILDLIFE | 67.64 | .00 | 3.58 | 96.42 | |
Wyoming Assessed Waters
Water Quality Attainment for Rivers and Streams
Description of this table
| Attainment Status | Miles | Percent of Assessed |
| Good | 4,654.43 | 78.85 |
| Threatened | 387.89 | 6.57 |
| Impaired | 860.73 | 14.58 |
| Total Miles Assessed | 5,903.05 | 100.00 |
Wyoming Top Causes of Impairments
for Rivers and Streams
Description of this table
| # | State Cause Name | Total Miles Impaired |
|---|---|---|
| 1 | FECAL COLIFORM | 614.74 |
| 2 | PHYSICAL SUBSTRATE HABITAT ALTERATIONS | 276.83 |
| 3 | SELENIUM | 160.37 |
| 4 | CHLORIDE | 86.72 |
| 5 | TEMPERATURE, WATER | 54.88 |
| 6 | SEDIMENTATION/SILTATION | 47.51 |
| 7 | OIL AND GREASE | 29.29 |
| 8 | PH | 22.53 |
| 9 | COPPER | 17.49 |
| 10 | MANGANESE | 15.59 |
Wyoming Top Probable Sources of Impairments
for Rivers and Streams
Description of this table
| # | State Source Name | Total Miles Impaired by Source |
|---|---|---|
| 1 | SOURCE UNKNOWN | 825.12 |
| 2 | GRAZING IN RIPARIAN OR SHORELINE ZONES | 238.22 |
| 3 | IRRIGATED CROP PRODUCTION | 98.58 |
| 4 | NATURAL SOURCES | 83.48 |
| 5 | PETROLEUM/NATURAL GAS PRODUCTION ACTIVITIES (PERMITTED) | 74.97 |
| 6 | DISCHARGES FROM MUNICIPAL SEPARATE STORM SEWER SYSTEMS (MS4) | 33.52 |
| 7 | LOSS OF RIPARIAN HABITAT | 16.30 |
| 8 | SUBSURFACE (HARDROCK) MININING | 10.95 |
| 9 | MUNICIPAL POINT SOURCE DISCHARGES | 6.91 |
| 10 | SOURCES OUTSIDE STATE JURISTICTION OR BORDERS | 6.54 |
Wyoming Assessed Waters
Individual Use Support for Lakes, Ponds and Reservoirs
Description of this table
| State Designated Use | Total Acres Assessed | Percent Good | Percent Threatened | Percent Impaired | % Good |
|---|---|---|---|---|---|
| % Threatened |
|||||
| % Impaired |
|||||
| AGRICULTURE | 6,237.60 | 97.65 | .00 | 2.35 | |
| AQUATIC LIFE OTHER THAN FISH | 6,237.60 | .00 | 97.41 | 2.59 | |
| FISHERIES | 6,091.20 | .00 | 99.75 | .25 | |
| WILDLIFE | 6,237.60 | 97.65 | .00 | 2.35 | |
Wyoming Assessed Waters
Water Quality Attainment for Lakes, Ponds and Reservoirs
Description of this table
| Attainment Status | Acres | Percent of Assessed |
| Good | .00 | .00 |
| Threatened | 6,075.80 | 97.41 |
| Impaired | 161.80 | 2.59 |
| Total Acres Assessed | 6,237.60 | 100.00 |
Wyoming Top Causes of Impairments
for Lakes, Ponds and Reservoirs
Description of this table
| # | State Cause Name | Total Acres Impaired |
|---|---|---|
| 1 | SEDIMENTATION/SILTATION | 6,091.20 |
| 2 | SELENIUM | 146.40 |
| 3 | PHOSPHORUS (TOTAL) | 15.40 |
Wyoming Top Probable Sources of Impairments
for Lakes, Ponds and Reservoirs
Description of this table
| # | State Source Name | Total Acres Impaired by Source |
|---|---|---|
| 1 | IRRIGATED CROP PRODUCTION | 6,222.20 |
| 2 | DISCHARGES FROM MUNICIPAL SEPARATE STORM SEWER SYSTEMS (MS4) | 15.40 |
| 3 | NON-POINT SOURCE | 15.40 |
Wyoming
Causes of Impairment
Description of this table| State Cause Name | Size of Assessed Waters with Listed Causes of Impairment | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rivers, Streams, Creeks (Miles) | Lakes, Ponds, Reservoir (Acres) | Bays, Estuaries (Square Miles) | Coastal Shorelines (Miles) | Oceans, Near Coastal Waters (Square Miles) | Wetlands (Acres) | Great Lakes Shoreline (Miles) | Great Lakes Open Waters (Square Miles) | Inland Lake Shoreline (Miles) | |
| AMMONIA (UN-IONIZED) | 6.91 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CADMIUM | 12.86 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CHLORIDE | 86.72 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| COPPER | 17.49 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| FECAL COLIFORM | 614.74 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MANGANESE | 15.59 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| OIL AND GREASE | 29.29 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PH | 22.53 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PHOSPHORUS (TOTAL) | .00 | 15.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PHYSICAL SUBSTRATE HABITAT ALTERATIONS | 276.83 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SEDIMENTATION/SILTATION | 47.51 | 6,091.20 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SELENIUM | 160.37 | 146.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SILVER | 12.86 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| TEMPERATURE, WATER | 54.88 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
Wyoming
Probable Sources Contributing to Impairment
Description of this table| State Source Name | Size of Assessed Waters with Probable Sources of Impairment | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Rivers, Streams, Creeks (Miles) | Lakes, Ponds, Reservoir (Acres) | Bays, Estuaries (Square Miles) | Coastal Shorelines (Miles) | Oceans, Near Coastal Waters (Square Miles) | Wetlands (Acres) | Great Lakes Shoreline (Miles) | Great Lakes Open Waters (Square Miles) | Inland Lake Shoreline (Miles) | |
| DISCHARGES FROM MUNICIPAL SEPARATE STORM SEWER SYSTEMS (MS4) | 33.52 | 15.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| GRAZING IN RIPARIAN OR SHORELINE ZONES | 238.22 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| IMPACTS FROM ABANDONED MINE LANDS (INACTIVE) | 6.54 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| IRRIGATED CROP PRODUCTION | 98.58 | 6,222.20 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOSS OF RIPARIAN HABITAT | 16.30 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MUNICIPAL POINT SOURCE DISCHARGES | 6.91 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NATURAL SOURCES | 83.48 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NON-POINT SOURCE | .00 | 15.40 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PETROLEUM/NATURAL GAS PRODUCTION ACTIVITIES (PERMITTED) | 74.97 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SOURCE UNKNOWN | 825.12 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SOURCES OUTSIDE STATE JURISTICTION OR BORDERS | 6.54 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SUBSURFACE (HARDROCK) MININING | 10.95 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
