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• Utah Assessment Data for 2010

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Site-specific Targeted Monitoring Summary Results

Utah (2010)

Description of this table

	Size of Water
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Good Waters	7,001.2	316,554.0
Previously impaired waters       now attaining all uses	12.7	86.0
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	3,618.5	152,323.0
TMDL completed	906.1	23,692.0
TMDL alternative
Non-pollutant impairment	108.3
TMDL needed	2,604.1	128,631.0
Total Assessed Waters	10,619.6	468,877.0
Total Waters	85,916.0	481,638.0
Percent of Waters Assessed	12.4	97.4

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2010

Site-specific Targeted Monitoring Results

Utah Rivers and Streams 2010

Description of this table Assessed Status Miles Assessed 10,619.6 Unassessed 75,296.4 Total Miles 85,916.0

Description of this table Attainment Status Miles Good 7,001.2 Threatened .0 Impaired 3,618.5 Total Miles Assessed 10,619.6

Description of this table TMDL Development Status Miles All TMDLs completed 906.1 TMDL alternative .0 Non-pollutant impairment 108.3 TMDL needed 2,604.1 Total Threatened and Impaired 3,618.5

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Utah Rivers and Streams 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Miles Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Agricultural	10,067.4	89.6	.0	10.4
Cold Water Aquatic Life	7,768.5	74.8	.0	25.2
Domestic Water Supply	4,164.3	95.4	.0	4.6
Non-Game Fish And Other Aquatic Life	1,112.2	73.3	.0	26.7
Secondary Recreation	413.3	48.5	.0	51.5
Warm Water Aquatic Life	1,684.0	58.9	.0	41.1
Wildlife Habitat	460.8	72.4	.0	27.6

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Site-specific Targeted Monitoring Results

Causes of Impairment
Utah Rivers and Streams 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Benthic Macroinvertebrates Bioassessments	Cause Unknown - Impaired Biota	1,277.2
Phosphorus, Total	Nutrients	925.2
Temperature, Water	Temperature	852.4
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	797.0
Physical Substrate Habitat Alterations	Habitat Alterations	654.7
Sedimentation/Siltation	Sediment	596.4
Selenium	Metals (other than Mercury)	298.1
Boron	Toxic Inorganics	234.3
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	174.2
Arsenic	Metals (other than Mercury)	123.3
Escherichia Coli (E. Coli)	Pathogens	110.5
Other Flow Regime Alterations	Flow Alteration(s)	96.7
pH	pH/Acidity/Caustic Conditions	87.8
Aquatic Plants - Native	Nuisance Native Species	57.6
Zinc	Metals (other than Mercury)	42.9
Cadmium	Metals (other than Mercury)	26.1
Radium	Radiation	21.8
Fecal Coliform	Pathogens	14.7
Direct Habitat Alterations	Habitat Alterations	11.4
Ammonia, Un-ionized	Ammonia	7.4
Low Flow Alterations	Flow Alteration(s)	3.1

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Site-specific Targeted Monitoring Results

Probable Sources
Utah Rivers and Streams 2010

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Source Unknown	Unknown	2,049.9
Agriculture	Agriculture	1,600.9
Natural Sources	Natural/Wildlife	1,094.7
Minor Industrial Point Sources	Industrial	862.2
Habitat Modification - Other Than Hydromodification	Habitat Alterations (Not Directly Related To Hydromodification)	711.2
Irrigated Crop Production	Agriculture	179.9
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	149.2
Municipal Point Source Discharges	Municipal Discharges/Sewage	143.1
Major Industrial Point Sources	Industrial	140.5
Sources Outside State Jurisdiction Or Borders	Other	136.2
Aquaculture (Permitted)	Aquaculture	125.6
Industrial Point Source Discharge	Industrial	115.8
Livestock (Grazing Or Feeding Operations)	Agriculture	113.5
Grazing In Riparian Or Shoreline Zones	Agriculture	83.6
Drought-Related Impacts	Natural/Wildlife	57.9
Other Recreational Pollution Sources	Recreation And Tourism (Non-Boating)	34.8
Rangeland Grazing	Agriculture	34.8
Site Clearance (Land Development Or Redevelopment)	Construction	34.7
Wastes From Pets	Urban-Related Runoff/Stormwater	18.8
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	4.3
Flow Alterations From Water Diversions	Hydromodification	3.1

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Site-specific Targeted Monitoring Results

Utah Lakes, Reservoirs, and Ponds 2010

Description of this table Assessed Status Acres Assessed 468,877.0 Unassessed 12,761.0 Total Acres 481,638.0

Description of this table Attainment Status Acres Good 316,554.0 Threatened .0 Impaired 152,323.0 Total Acres Assessed 468,877.0

Description of this table TMDL Development Status Acres All TMDLs completed 23,692.0 TMDL alternative .0 Non-pollutant impairment .0 TMDL needed 128,631.0 Total Threatened and Impaired 152,323.0

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
Utah Lakes, Reservoirs, and Ponds 2010

* Waters assessed for more than one designated use are included in multiple designated use groups below.

Description of this table

Designated Use	Acres Assessed	Percent Good	Percent Threatened	Percent Impaired	% Good
					% Threatened
					% Impaired
Agricultural	463,859.0	79.1	.0	20.9
Cold Water Aquatic Life	171,990.0	73.1	.0	26.9
Domestic Water Supply	254,208.0	100.0	.0	.0
Non-Game Fish And Other Aquatic Life	1,287.0	100.0	.0	.0
Primary Recreation	162,700.0	100.0	.0	.0
Secondary Recreation	162,700.0	100.0	.0	.0
Warm Water Aquatic Life	283,115.0	62.5	.0	37.5
Wildlife Habitat	10,990.0	100.0	.0	.0

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Site-specific Targeted Monitoring Results

Causes of Impairment
Utah Lakes, Reservoirs, and Ponds 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Phosphorus, Total	Nutrients	140,401.0
PCB(s) in Fish Tissue	Polychlorinated Biphenyls (PCBs)	96,900.0
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	96,900.0
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	47,318.0
Temperature, Water	Temperature	16,179.0
pH	pH/Acidity/Caustic Conditions	9,402.0
Mercury in Fish Tissue	Mercury	163.0

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Site-specific Targeted Monitoring Results

Probable Sources
Utah Lakes, Reservoirs, and Ponds 2010

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Managed Pasture Grazing	Agriculture	115,756.0
Source Unknown	Unknown	107,443.0
Irrigated Crop Production	Agriculture	105,629.0
Animal Feeding Operations (Nps)	Agriculture	101,168.0
Municipal Point Source Discharges	Municipal Discharges/Sewage	99,968.0
Industrial Point Source Discharge	Industrial	99,715.0
Unspecified Urban Stormwater	Urban-Related Runoff/Stormwater	98,294.0
Highways, Roads, Bridges, Infrastructure (New Construction)	Construction	96,900.0
Other Recreational Pollution Sources	Recreation And Tourism (Non-Boating)	19,115.0
Septage Disposal	Municipal Discharges/Sewage	5,457.0
Site Clearance (Land Development Or Redevelopment)	Construction	5,390.0
Rangeland Grazing	Agriculture	4,900.0
Aquaculture (Permitted)	Aquaculture	4,490.0
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	2,874.0
Subsurface (Hardrock) Mining	Resource Extraction	2,815.0
Grazing In Riparian Or Shoreline Zones	Agriculture	2,709.0
Livestock (Grazing Or Feeding Operations)	Agriculture	1,680.0
Silviculture Plantation Management	Silviculture (Forestry)	1,655.0
Combined Sewer Overflows	Municipal Discharges/Sewage	1,394.0
Natural Sources	Natural/Wildlife	1,394.0
Mine Tailings	Resource Extraction	1,394.0
Permitted Runoff From Confined Animal Feeding Operations (Cafos)	Agriculture	1,300.0
Post-Development Erosion And Sedimentation	Hydromodification	1,040.0
Non-Irrigated Crop Production	Agriculture	554.0
Channelization	Hydromodification	266.0
Auction Barns And Off-Farm Animal Holding/Management Area	Agriculture	128.0

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Utah Causes of Impairment for Reporting Year 2010

Description of this table

NOTE: Click on the underlined Cause of Impairment Group to see a list of specific state causes of impairment making up the Cause of Impairment Group. See also Pollution categories summary document (PDF) (20 pp, 557K, About PDF) for brief, non-technical descriptions of general cause categories.
Cause of Impairment Group	Size of Assessed Waters with Listed Causes of Impairment
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Ammonia	7.4
Cause Unknown - Impaired Biota	1,277.2
Flow Alteration(s)	99.8
Habitat Alterations	666.2
Mercury		163.0
Metals (other than Mercury)	447.6
Nuisance Native Species	57.6
Nutrients	925.2	140,401.0
Organic Enrichment/Oxygen Depletion	174.2	47,318.0
Pathogens	125.2
pH/Acidity/Caustic Conditions	87.8	9,402.0
Polychlorinated Biphenyls (PCBs)		96,900.0
Radiation	21.8
Salinity/Total Dissolved Solids/Chlorides/Sulfates	797.0	96,900.0
Sediment	596.4
Temperature	852.4	16,179.0
Toxic Inorganics	234.3

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Utah Probable Sources Contributing to Impairments
for Reporting Year 2010

Description of this table

NOTE: Click on the underlined Probable Source Group to see a list of specific state Probable Sources making up the Probable Source Group.
Probable Source Group	Size of Assessed Waters with Probable Sources of Impairments
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Agriculture	1,652.8	118,175.0
Aquaculture	125.6	4,490.0
Construction	34.7	102,290.0
Habitat Alterations (Not Directly Related To Hydromodification)	711.2
Hydromodification	3.1	1,306.0
Industrial	1,042.6	99,715.0
Municipal Discharges/Sewage	147.4	106,905.0
Natural/Wildlife	1,135.8	1,394.0
Other	136.2
Recreation And Tourism (Non-Boating)	34.8	19,115.0
Resource Extraction		4,209.0
Silviculture (Forestry)		1,655.0
Unknown	2,049.9	107,443.0
Urban-Related Runoff/Stormwater	168.0	98,294.0

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Utah TMDL Alternatives by Cause of Impairment 2010

No TMDL Alternatives reported.

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