South Dakota Water Quality Assessment Report

Assessed Waters of South Dakota by Watershed

Search for a waterbody within South Dakota

Features

Site-specific Targeted Monitoring Summary Results

South Dakota (2010)

	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
	Size of Water
Good Waters	2,079.4	104,741.7
Previously impaired waters now attaining all uses	1,332.3	70,184.5
Threatened Waters	372.1	784.0
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed	372.1	784.0
Impaired Waters	3,755.2	30,050.8
TMDL completed	311.2	27.9
TMDL alternative
Non-pollutant impairment
TMDL needed	3,443.9	30,022.9
New TMDLs completed	469.6	21.0
Remaining TMDLs needed	2,974.3	30,001.9

Total Assessed Waters	6,206.6	135,576.5
Total Waters	95,130.0	750,000.0
Percent of Waters Assessed	6.5	18.1

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

Site-specific Targeted Monitoring Results

South Dakota Rivers and Streams 2010

Description of this table

Assessed Status	Miles

Assessed	6,206.6
Unassessed	88,923.4
Total Miles	95,130.0

Description of this table

Attainment Status	Miles

Good	2,079.4
Threatened	372.1
Impaired	3,755.2
Total Miles Assessed	6,206.6

Description of this table

TMDL Development Status	Miles

All TMDLs completed	780.9
TMDL alternative	.0
Non-pollutant impairment	.0
TMDL needed	3,346.4
Total Threatened and Impaired	4,127.3

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
South Dakota 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
Coldwater Marginal Fish Life Propagation Waters	186.9	64.5	14.7	20.7
Coldwater Permanent Fish Life Propagation Waters	705.3	59.0	1.6	39.4
Commerce And Industry Waters	526.8	100.0	.0	.0
Domestic Water Supply Waters	812.9	95.5	.0	4.5
Fish And Wildlife Propagation, Recreation, And Stock Watering Waters	5,821.8	95.7	.0	4.3
Immersion Recreation Waters	1,392.2	53.9	.0	46.1
Irrigation Waters	5,896.9	79.9	9.8	10.3
Limited Contact Recreation Waters	5,190.0	57.1	4.4	38.5
Warmwater Marginal Fish Life Propagation Waters	1,372.1	73.0	10.3	16.6
Warmwater Permanent Fish Life Propagation Waters	776.0	38.5	.0	61.5
Warmwater Semipermanent Fish Life Propagation Waters	2,896.5	46.9	1.4	51.7

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Site-specific Targeted Monitoring Results

Causes of Impairment
South Dakota Rivers and Streams 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Fecal Coliform	Pathogens	1,920.2
Total Suspended Solids (TSS)	Turbidity	1,804.5
Escherichia Coli (E. Coli)	Pathogens	1,116.2
Salinity	Salinity/Total Dissolved Solids/Chlorides/Sulfates	952.2
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	407.9
Temperature, Water	Temperature	374.4
Specific Conductivity	Salinity/Total Dissolved Solids/Chlorides/Sulfates	303.9
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	284.7
pH	pH/Acidity/Caustic Conditions	136.7
Alkalinity, Carbonate as CaCO3	pH/Acidity/Caustic Conditions	87.3
Ammonia, Total	Ammonia	44.4
Cadmium	Metals (other than Mercury)	1.6

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Site-specific Targeted Monitoring Results

Probable Sources
South Dakota Rivers and Streams 2010

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Livestock (Grazing Or Feeding Operations)	Agriculture	1,335.4
Natural Sources	Natural/Wildlife	1,240.5
Crop Production (Crop Land Or Dry Land)	Agriculture	729.2
Wildlife Other Than Waterfowl	Natural/Wildlife	499.8
Grazing In Riparian Or Shoreline Zones	Agriculture	435.1
Animal Feeding Operations (Nps)	Agriculture	250.0
Source Unknown	Unknown	127.3
Irrigated Crop Production	Agriculture	96.9
Rangeland Grazing	Agriculture	87.3
Streambank Modifications/Destabilization	Hydromodification	76.5
On-Site Treatment Systems (Septic Systems And Similar Decentralized Systems)	Municipal Discharges/Sewage	59.3
Municipal Point Source Discharges	Municipal Discharges/Sewage	44.4
Drought-Related Impacts	Natural/Wildlife	33.6
Urban Runoff/Storm Sewers	Urban-Related Runoff/Stormwater	27.5
Residential Districts	Urban-Related Runoff/Stormwater	16.7
Non-Irrigated Crop Production	Agriculture	16.6
Wet Weather Discharges (Point Source And Combination Of Stormwater, Sso Or Cso)	Municipal Discharges/Sewage	13.8
Municipal (Urbanized High Density Area)	Urban-Related Runoff/Stormwater	4.7
Non-Point Source	Unspecified Nonpoint Source	3.4
Acid Mine Drainage	Resource Extraction	1.6
Impacts From Abandoned Mine Lands (Inactive)	Resource Extraction	1.6
Combined Sewer Overflows	Municipal Discharges/Sewage	1.5

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Site-specific Targeted Monitoring Results

South Dakota Lakes, Reservoirs, and Ponds 2010

Description of this table

Assessed Status	Acres

Assessed	135,576.5
Unassessed	614,423.6
Total Acres	750,000.0

Description of this table

Attainment Status	Acres

Good	104,741.7
Threatened	784.0
Impaired	30,050.8
Total Acres Assessed	135,576.5

Description of this table

TMDL Development Status	Acres

All TMDLs completed	48.9
TMDL alternative	.0
Non-pollutant impairment	.0
TMDL needed	30,785.9
Total Threatened and Impaired	30,834.8

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Site-specific Targeted Monitoring Results

Individual Designated Use Support
South Dakota 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
Coldwater Marginal Fish Life Propagation Waters	163.2	89.6	.0	10.4
Coldwater Permanent Fish Life Propagation Waters	1,675.0	50.9	.0	49.1
Domestic Water Supply Waters	7,994.6	100.0	.0	.0
Fish And Wildlife Propagation, Recreation, And Stock Watering Waters	134,099.7	97.0	2.6	.3
Immersion Recreation Waters	128,413.6	92.2	.0	7.8
Irrigation Waters	43,778.1	88.4	.0	11.6
Limited Contact Recreation Waters	128,413.6	93.3	.0	6.7
Warmwater Marginal Fish Life Propagation Waters	21,545.9	74.4	.0	25.6
Warmwater Permanent Fish Life Propagation Waters	72,801.7	89.2	.1	10.7
Warmwater Semipermanent Fish Life Propagation Waters	38,160.2	71.6	1.0	27.4

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Site-specific Targeted Monitoring Results

Causes of Impairment
South Dakota Lakes, Reservoirs, and Ponds 2010

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
pH	pH/Acidity/Caustic Conditions	12,704.6
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	7,647.4
Salinity	Salinity/Total Dissolved Solids/Chlorides/Sulfates	5,069.9
Chlorophyll-A	Algal Growth	3,674.3
Escherichia Coli (E. Coli)	Pathogens	2,948.3
Fecal Coliform	Pathogens	1,461.1
Temperature, Water	Temperature	1,376.4
Mercury	Mercury	704.0
Nitrates	Nutrients	54.6
Specific Conductivity	Salinity/Total Dissolved Solids/Chlorides/Sulfates	54.6
Selenium	Metals (other than Mercury)	54.6
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	54.6

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Site-specific Targeted Monitoring Results

Probable Sources
South Dakota Lakes, Reservoirs, and Ponds 2010

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Natural Sources	Natural/Wildlife	5,178.7
Source Unknown	Unknown	3,674.3
Non-Point Source	Unspecified Nonpoint Source	704.0

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South Dakota Causes of Impairment for Reporting Year 2010

Description of this table

Cause of Impairment Group	Size of Assessed Waters with Listed Causes of Impairment
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	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Algal Growth		3,674.3
Ammonia	44.4
Mercury		704.0
Metals (other than Mercury)	1.6	54.6
Nutrients		54.6
Organic Enrichment/Oxygen Depletion	407.9	7,647.4
Pathogens	2,057.2	2,948.3
pH/Acidity/Caustic Conditions	224.0	12,704.6
Salinity/Total Dissolved Solids/Chlorides/Sulfates	1,242.3	5,124.5
Temperature	374.4	1,376.4
Turbidity	1,804.5

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South Dakota Probable Sources Contributing to Impairments
for Reporting Year 2010

Description of this table

Probable Source Group	Size of Assessed Waters with Probable Sources of Impairments
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	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Agriculture	1,607.3
Hydromodification	76.5
Municipal Discharges/Sewage	105.1
Natural/Wildlife	1,536.7	5,178.7
Resource Extraction	1.6
Unknown	127.3	3,674.3
Unspecified Nonpoint Source	3.4	704.0
Urban-Related Runoff/Stormwater	48.9

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South Dakota TMDL Alternatives by Cause of Impairment 2010

No TMDL Alternatives reported.

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South Dakota Previously 303(d)-Listed Waters Now Attaining All Applicable Water Quality Standards

Description of this table

Year Attaining	Number of Waters Attaining	Number of Causes of Impairment Addressed
NOTE: Click on the underlined "Number of Waters Attaining" value for a detailed list of those previously 303(d)-listed waters now attaining all applicable water quality standards.
2004	4	4
2008	11	15
2010	28	36
2012	13	17

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South Dakota Causes of Impairment for 303(d) Listed Waters

Description of this table

Cause of Impairment Group Name	Number of Causes of Impairment Reported
NOTE: Click on a cause of impairment (e.g. pathogens) to see the specific state-reported causes that are grouped to make up this category. Click on the "Number of Causes of Impairment Reported" to see a list of waters with that cause of impairment.
Pathogens	62
Turbidity	36
Temperature	33
Salinity/Total Dissolved Solids/Chlorides/Sulfates	31
pH/Acidity/Caustic Conditions	28
Organic Enrichment/Oxygen Depletion	22
Algal Growth	12
Mercury	8
Metals (other than Mercury)	1

Total: 233 Causes of Impairment

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South Dakota Cumulative TMDLs by Pollutant

This chart includes TMDLs since October 1, 1995.

Description of this table

Pollutant	Number of TMDLs	Number of Causes of Impairment Addressed
NOTE: Click on the underlined "Pollutant" value to see associated listed waters for which a TMDL was developed. Click on the underlined "Number of TMDLs" value to see a listing of those TMDLs for the pollutant.
Ammonia	131	131
Fecal Coliform	48	48
Phosphorus	45	74
Total Suspended Solids (TSS)	22	22
Escherichia Coli (E. Coli)	17	17
Sediment	15	25
Dissolved Oxygen	9	9
Nutrients	5	7
Biochemical Oxygen Demand (BOD)	3	3
Cadmium	3	3
Carbonaceous Bod	3	3
Cyanide	3	3
Chromium, Total	2	2
Silver	2	2
Zinc	2	2
Arsenic	1	1
Chloride	1	1
Copper	1	1
Fecal	1	1
Lead	1	1
Mercury	1	1
Nitrate	1	1
Nitrogen	1	1
Selenium	1	1
Total Dissolved Solids (TDS)	1	1
Trend	1	1

Total: 321 TMDLs; 362 Causes of Impairment Addressed

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South Dakota Cumulative Number of TMDLs

EPA Fiscal Year starts October 1 and ends September 30.

Description of this table

Fiscal Year	Number of TMDLs	Number of Causes of Impairment Addressed
NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year.
1997	22	22
1998	13	13
1999	42	66
2000	10	10
2001	16	21
2002	23	27
2003	28	32
2004	27	27
2005	20	20
2006	15	15
2007	22	25
2008	26	27
2009	5	5
2010	22	22
2011	18	18
2012	12	12

Total: 321 TMDLs; 362 Causes of Impairment Addressed

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TMDL Document Search

Full Text Search of TMDL Documents

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