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Assessment Data for the State of Nevada Year 2004
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| NOTE: The Nevada Division of Environmental Protection, Bureau of Water Quality Planning, Water Quality Monitoring Branch 305(b) report submission reflects the State's 2002 303(d) list because at the time of submission, the State's 2004 303(d) list had not been approved. This data will serve as the basis for U.S. EPA's 2004 National Water Quality Inventory Report to Congress. Since this submission, the U.S. EPA has approved the State's 2004 303(d) list, which can be found at http://ndep.nv.gov/bwqp/303dlist.htm. This list will take precedence when addressing 303(d) data questions. |
State of Nevada websites: | State 305(b) Water Quality Assessment Report(s) |
| State Water Quality Program |
Search for a Waterbody within Nevada
Total Assessed Waters for the State of Nevada
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 | 4,021.23 | 226,899.73 | .00 | .00 | .00 | 51,826.00 | .00 | .00 | .00 |
| Estimated Total Water Size in NV | 15,549.00 | 553,239.00 | Unavailable | Unavailable | Unavailable | 136,650.00 | Unavailable | Unavailable | Unavailable |
| Percent of Waters Assessed | 25.86 | 41.01 | Unavailable | Unavailable | Unavailable | 37.93 | Unavailable | Unavailable | Unavailable |
Assessed Waters of Nevada 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 | 153.20 | 1,300.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| BRUNEAU | 108.05 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| CARSON DESERT | 73.08 | 2,620.00 | .00 | .00 | .00 | 24,826.00 | .00 | .00 | .00 |
| DIAMOND-MONITOR VALLEYS | 69.02 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| DIXIE VALLEY | 31.84 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| EAST WALKER | 32.28 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| FISH LAKE-SODA SPRING VALLEYS | 16.84 | 7.49 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| GOOSE | 27.30 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| GUANO | .00 | 93.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HAMLIN-SNAKE VALLEYS | 48.79 | 5.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HAVASU-MOHAVE LAKES | 92.21 | 14,000.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HOT CREEK-RAILROAD VALLEYS | 18.15 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LAKE MEAD | 25.07 | 93,840.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LAKE TAHOE | 73.95 | 37,231.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LAS VEGAS WASH | 10.35 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LITTLE HUMBOLDT | 190.81 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LITTLE SMOKY-NEWARK VALLEYS | .00 | 4.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LONG-RUBY VALLEYS | 5.26 | 29.70 | .00 | .00 | .00 | 14,000.00 | .00 | .00 | .00 |
| LOWER HUMBOLDT | 221.29 | 11,400.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER QUINN | 45.93 | 598.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LOWER VIRGIN | 31.06 | 15.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MASSACRE LAKE | .00 | 78.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MEADOW VALLEY WASH | 53.86 | 103.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MIDDLE CARSON | 79.31 | 14,800.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MIDDLE HUMBOLDT | 157.86 | 27.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MUDDY | 38.70 | 86.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NORTH FORK HUMBOLDT | 100.27 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NORTHERN BIG SMOKY VALLEY | 67.02 | 14.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PINE | 54.28 | 13.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| PYRAMID-WINNEMUCCA LAKES | 28.07 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| REESE | 208.72 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| ROCK | 118.96 | 576.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SALMON FALLS | 124.06 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SAND SPRING-TIKABOO VALLEYS | 10.17 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SMOKE CREEK DESERT | 25.99 | 46.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SOUTH FORK HUMBOLDT | 206.74 | 1,650.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SOUTH FORK OWYHEE | 92.03 | 933.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SOUTHERN BIG SMOKY VALLEY | 21.44 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SPRING-STEPTOE VALLEYS | 86.33 | 168.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| THOUSAND-VIRGIN | .00 | 194.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| TRUCKEE | 162.06 | 6,153.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER CARSON | 96.79 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER HUMBOLDT | 580.20 | 12.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER OWYHEE | 165.69 | 2,830.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPPER QUINN | 106.47 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| WALKER | 92.52 | .00 | .00 | .00 | .00 | 13,000.00 | .00 | .00 | .00 |
| WALKER LAKE | 52.72 | 35,490.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| WEST WALKER | 55.70 | 987.54 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| WHITE | 36.75 | 1,596.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
Nevada 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 |
|||||
| AQUATIC LIFE | 4,010.88 | 57.68 | .00 | 42.32 | |
| ENHANCEMENT OF WATER QUALITY | 73.82 | 100.00 | .00 | .00 | |
| FISH CONSUMPTION | 19.69 | 100.00 | .00 | .00 | |
| FRESHWATER MARSH | 10.35 | 100.00 | .00 | .00 | |
| INDUSTRIAL SUPPLY | 3,984.55 | 100.00 | .00 | .00 | |
| IRRIGATION | 4,021.23 | 94.89 | .00 | 5.11 | |
| MUNICIPAL OR DOMESTIC SUPPLY | 3,788.96 | 85.64 | .00 | 14.36 | |
| PROPAGATION OF WILDLIFE | 4,021.23 | 99.26 | .00 | .74 | |
| RECREATION INVOLVING CONTACT WITH THE WATER | 3,734.47 | 95.42 | .00 | 4.58 | |
| RECREATION NOT INVOLVING CONTACT WITH THE WATER | 4,014.66 | 99.96 | .00 | .04 | |
| WATERING OF LIVESTOCK | 4,021.23 | 94.45 | .00 | 5.55 | |
Nevada Assessed Waters
Water Quality Attainment for Rivers and Streams
Description of this table
| Attainment Status | Miles | Percent of Assessed |
| Good | 2,300.04 | 57.20 |
| Threatened | .00 | .00 |
| Impaired | 1,721.19 | 42.80 |
| Total Miles Assessed | 4,021.23 | 100.00 |
Nevada Top Causes of Impairments
for Rivers and Streams
Description of this table
| # | State Cause Name | Total Miles Impaired |
|---|---|---|
| 1 | METALS | 845.65 |
| 2 | COPPER | 735.21 |
| 3 | TURBIDITY | 620.87 |
| 4 | TEMPERATURE, WATER | 524.49 |
| 5 | ORGANIC ENRICHMENT/LOW DO | 453.02 |
| 6 | NUTRIENTS | 399.45 |
| 7 | PHOSPHATE | 374.54 |
| 8 | BORON | 337.08 |
| 9 | CADMIUM | 183.26 |
| 10 | PH | 162.35 |
Nevada Top Probable Sources of Impairments
for Rivers and Streams
Description of this table
| # | State Source Name | Total Miles Impaired by Source |
|---|---|---|
| 1 | NATURAL SOURCES | 1,396.53 |
| 2 | AGRICULTURE | 416.04 |
| 3 | GRAZING RELATED SOURCES | 325.46 |
| 4 | HYDROMODIFICATION | 123.32 |
| 5 | IMPACTS FROM HYDROSTRUCTURE FLOW REGULATION/MODIFICATION | 63.77 |
| 6 | RANGELAND GRAZING | 48.71 |
| 7 | SITE CLEARANCE (LAND DEVELOPMENT OR REDEVELOPMENT) | 32.11 |
| 8 | SOURCE UNKNOWN | 29.76 |
| 9 | URBAN RUNOFF/STORM SEWERS | 22.07 |
| 10 | NATURAL GEOTHERMAL | 15.41 |
Nevada 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 |
|||||
| AQUATIC LIFE | 226,899.73 | 81.23 | .00 | 18.77 | |
| ENHANCEMENT OF WATER QUALITY | 451.00 | 100.00 | .00 | .00 | |
| INDUSTRIAL SUPPLY | 225,249.73 | 100.00 | .00 | .00 | |
| IRRIGATION | 226,899.73 | 79.33 | .00 | 20.67 | |
| MUNICIPAL OR DOMESTIC SUPPLY | 221,070.73 | 83.33 | .00 | 16.67 | |
| MUNICIPAL OR DOMESTIC SUPPLY--DISINFECTION AND FILTRATION TREATMENT ONLY | 36,812.00 | 100.00 | .00 | .00 | |
| PROPAGATION OF WILDLIFE | 226,899.73 | 84.36 | .00 | 15.64 | |
| RECREATION INVOLVING CONTACT WITH THE WATER | 221,139.73 | 98.78 | .00 | 1.22 | |
| RECREATION NOT INVOLVING CONTACT WITH THE WATER | 226,899.73 | 100.00 | .00 | .00 | |
| WATERING OF LIVESTOCK | 226,899.73 | 94.98 | .00 | 5.02 | |
Nevada Assessed Waters
Water Quality Attainment for Lakes, Ponds and Reservoirs
Description of this table
| Attainment Status | Acres | Percent of Assessed |
| Good | 172,921.19 | 76.21 |
| Threatened | .00 | .00 |
| Impaired | 53,978.54 | 23.79 |
| Total Acres Assessed | 226,899.73 | 100.00 |
Nevada Top Causes of Impairments
for Lakes, Ponds and Reservoirs
Description of this table
| # | State Cause Name | Total Acres Impaired |
|---|---|---|
| 1 | BORON | 48,190.00 |
| 2 | METALS | 42,257.54 |
| 3 | NUTRIENTS | 38,320.00 |
| 4 | PHOSPHATE | 38,320.00 |
| 5 | ARSENIC | 36,790.00 |
| 6 | COPPER | 6,767.54 |
| 7 | PH | 6,012.00 |
| 8 | TEMPERATURE, WATER | 5,525.54 |
| 9 | TOTAL SUSPENDED SOLIDS (TSS) | 3,817.54 |
| 10 | ORGANIC ENRICHMENT/LOW DO | 3,046.00 |
Nevada Top Probable Sources of Impairments
for Lakes, Ponds and Reservoirs
Description of this table
| # | State Source Name | Total Acres Impaired by Source |
|---|---|---|
| 1 | IMPACTS FROM HYDROSTRUCTURE FLOW REGULATION/MODIFICATION | 35,490.00 |
| 2 | SOURCE UNKNOWN | 35,490.00 |
| 3 | HYDROMODIFICATION | 35,490.00 |
| 4 | NATURAL SOURCES | 18,399.54 |
Nevada Assessed Waters
Individual Use Support for Wetlands
Description of this table
| State Designated Use | Total Acres Assessed | Percent Good | Percent Threatened | Percent Impaired | % Good |
|---|---|---|---|---|---|
| % Threatened |
|||||
| % Impaired |
|||||
| AQUATIC LIFE | 51,826.00 | 74.92 | .00 | 25.08 | |
| INDUSTRIAL SUPPLY | 51,826.00 | 100.00 | .00 | .00 | |
| IRRIGATION | 51,826.00 | 74.92 | .00 | 25.08 | |
| MUNICIPAL OR DOMESTIC SUPPLY | 32,500.00 | 60.00 | .00 | 40.00 | |
| PROPAGATION OF WILDLIFE | 51,826.00 | 74.92 | .00 | 25.08 | |
| RECREATION INVOLVING CONTACT WITH THE WATER | 32,500.00 | 60.00 | .00 | 40.00 | |
| RECREATION NOT INVOLVING CONTACT WITH THE WATER | 51,826.00 | 100.00 | .00 | .00 | |
| WATERING OF LIVESTOCK | 51,826.00 | 100.00 | .00 | .00 | |
Nevada Assessed Waters
Water Quality Attainment for Wetlands
Description of this table
| Attainment Status | Acres | Percent of Assessed |
| Good | 38,826.00 | 74.92 |
| Threatened | .00 | .00 |
| Impaired | 13,000.00 | 25.08 |
| Total Acres Assessed | 51,826.00 | 100.00 |
Nevada Top Causes of Impairments
for Wetlands
Description of this table
| # | State Cause Name | Total Acres Impaired |
|---|---|---|
| 1 | ARSENIC | 13,000.00 |
| 2 | METALS | 13,000.00 |
| 3 | BORON | 13,000.00 |
| 4 | PH | 13,000.00 |
| 5 | TEMPERATURE, WATER | 13,000.00 |
| 6 | SALINITY/TDS/CHLORIDES | 13,000.00 |
| 7 | ORGANIC ENRICHMENT/LOW DO | 13,000.00 |
Nevada Top Probable Sources of Impairments
for Wetlands
Description of this table
| # | State Source Name | Total Acres Impaired by Source |
|---|---|---|
| 1 | SOURCE UNKNOWN | 13,000.00 |
Nevada
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) | 27.60 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| ARSENIC | 66.96 | 36,790.00 | .00 | .00 | .00 | 13,000.00 | .00 | .00 | .00 |
| BORON | 337.08 | 48,190.00 | .00 | .00 | .00 | 13,000.00 | .00 | .00 | .00 |
| CADMIUM | 183.26 | 2,287.54 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| COPPER | 735.21 | 6,767.54 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| IRON | 10.51 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| LEAD | 7.44 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MERCURY | 71.49 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| METALS | 845.65 | 42,257.54 | .00 | .00 | .00 | 13,000.00 | .00 | .00 | .00 |
| NUTRIENTS | 399.45 | 38,320.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| ORGANIC ENRICHMENT/LOW DO | 453.02 | 3,046.00 | .00 | .00 | .00 | 13,000.00 | .00 | .00 | .00 |
| PH | 162.35 | 6,012.00 | .00 | .00 | .00 | 13,000.00 | .00 | .00 | .00 |
| PHOSPHATE | 374.54 | 38,320.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SALINITY/TDS/CHLORIDES | 71.52 | 1,358.00 | .00 | .00 | .00 | 13,000.00 | .00 | .00 | .00 |
| TEMPERATURE, WATER | 524.49 | 5,525.54 | .00 | .00 | .00 | 13,000.00 | .00 | .00 | .00 |
| TOTAL KJEHLDAHL NITROGEN (TKN) | 29.41 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| TOTAL SUSPENDED SOLIDS (TSS) | 150.82 | 3,817.54 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| TURBIDITY | 620.87 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| ZINC | 128.32 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
Nevada
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) | |
| ACID MINE DRAINAGE | 1.44 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| AGRICULTURE | 416.04 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| GRAZING RELATED SOURCES | 325.46 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| HYDROMODIFICATION | 123.32 | 35,490.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| IMPACTS FROM HYDROSTRUCTURE FLOW REGULATION/MODIFICATION | 63.77 | 35,490.00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MINE TAILINGS | 1.44 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MINOR MUNICIPAL POINT SOURCE | 5.85 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| MUNICIPAL POINT SOURCE DISCHARGES | 10.97 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NATURAL GEOTHERMAL | 15.41 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| NATURAL SOURCES | 1,396.53 | 18,399.54 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| RANGELAND GRAZING | 48.71 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SITE CLEARANCE (LAND DEVELOPMENT OR REDEVELOPMENT) | 32.11 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| SOURCE UNKNOWN | 29.76 | 35,490.00 | .00 | .00 | .00 | 13,000.00 | .00 | .00 | .00 |
| SOURCES OUTSIDE STATE JURISTICTION OR BORDERS | 10.48 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| UPSTREAM IMPOUNDMENTS (E.G., PL-566 NRCS STRUCTURES) | 13.75 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
| URBAN RUNOFF/STORM SEWERS | 22.07 | .00 | .00 | .00 | .00 | .00 | .00 | .00 | .00 |
