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Arkansas Assessment Summary for Reporting Year 2008

Description of this table

	Size of Water
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Good Waters	5,542.6	30,010.0
Previously impaired waters       now attaining all uses
Threatened Waters
TMDL completed
TMDL alternative
Non-pollutant impairment
TMDL needed
Impaired Waters	4,436.8	34,768.0
TMDL completed	731.7	26,935.0
TMDL alternative		10.0
Non-pollutant impairment	22.1
TMDL needed	3,683.0	7,823.0
New TMDLs completed	27.0	.0
Remaining TMDLs needed	3,656.0	7,823.0
Total Assessed Waters	9,979.4	64,778.0
Total Waters	87,617.0	514,245.0
Percent of Waters Assessed	11.4	12.6

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Summary of Water Quality Assessments for Each Waterbody Type
for Reporting Year 2008

Arkansas Assessed Waters
Summary of Water Quality Attainment for Rivers and Streams
Reporting Year 2008

Description of this table Assessed Status Miles Assessed 9,979.4 Unassessed 77,637.6 Total Miles 87,617.0

Description of this table Attainment Status Miles Good 5,542.6 Threatened .0 Impaired 4,436.8 Total Miles Assessed 9,979.4

Description of this table TMDL Development Status Miles All TMDLs completed 758.7 TMDL alternative .0 Non-pollutant impairment 22.1 TMDL needed 3,656.0 Total Threatened and Impaired 4,436.8

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Arkansas Assessed Waters
Designated Use Support for Rivers and Streams
Reporting Year 2008*

* 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 Water Supply	9,934.1	86.4	.0	13.6
Domestic Water Supply	9,814.9	95.3	.0	4.7
Fish Consumption	9,934.1	96.5	.0	3.5
Fisheries	9,941.4	64.5	.0	35.5
Industrial Water Supply	9,934.1	86.4	.0	13.6
Primary Contact Recreation	9,972.1	92.1	.0	7.9
Secondary Contact Recreation	9,963.1	99.8	.0	.2

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Arkansas Causes of Impairment
for Threatened and Impaired Rivers and Streams
Reporting Year 2008

Description of this table

Cause of Impairment	Cause of Impairment Group	Miles Threatened or Impaired
Sedimentation/Siltation	Sediment	1,787.0
Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	1,309.9
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	1,010.8
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	803.0
Zinc	Metals (other than Mercury)	724.8
Fecal Coliform	Pathogens	697.0
Lead	Metals (other than Mercury)	672.5
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	533.7
Copper	Metals (other than Mercury)	435.9
Mercury	Mercury	307.0
Escherichia Coli (E. Coli)	Pathogens	237.8
pH	pH/Acidity/Caustic Conditions	200.0
Temperature, Water	Temperature	86.1
Phosphorus, Total	Nutrients	72.0
Nitrates	Nutrients	62.1
Turbidity	Turbidity	49.4
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	44.8
Aluminum	Metals (other than Mercury)	11.7
Ammonia, Un-ionized	Ammonia	11.5
Beryllium	Metals (other than Mercury)	2.5
Cadmium	Metals (other than Mercury)	2.5

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Arkansas Probable Sources of Impairments
for Threatened and Impaired Rivers and Streams
Reporting Year 2008

Description of this table

Probable Source	Probable Source Group	Miles Threatened or Impaired
Source Unknown	Unknown	1,794.3
Agriculture	Agriculture	1,073.6
Highways, Roads, Bridges, Infrastructure (New Construction)	Construction	288.6
Municipal Point Source Discharges	Municipal Dishcarges/Sewage	195.5
Industrial Point Source Discharge	Industrial	182.0
Mine Tailings	Resource Extraction	166.5
Unspecified Urban Stormwater	Urban-Related Runoff/Stormwater	14.1
Hydrostructure Impacts On Fish Passage	Hydromodification	7.2
Impacts From Hydrostructure Flow Regulation/Modification	Hydromodification	2.0

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Arkansas Assessed Waters
Summary of Water Quality Attainment for Lakes, Reservoirs, and Ponds
Reporting Year 2008

Description of this table Assessed Status Acres Assessed 64,778.0 Unassessed 449,467.0 Total Acres 514,245.0

Description of this table Attainment Status Acres Good 30,010.0 Threatened .0 Impaired 34,768.0 Total Acres Assessed 64,778.0

Description of this table TMDL Development Status Acres All TMDLs completed 26,935.0 TMDL alternative 10.0 Non-pollutant impairment .0 TMDL needed 7,823.0 Total Threatened and Impaired 34,768.0

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Arkansas Assessed Waters
Designated Use Support for Lakes, Reservoirs, and Ponds
Reporting Year 2008*

* 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 Water Supply	64,778.0	100.0	.0	.0
Domestic Water Supply	64,778.0	100.0	.0	.0
Fish Consumption	64,778.0	63.8	.0	36.2
Fisheries	64,778.0	82.5	.0	17.5
Industrial Water Supply	64,778.0	100.0	.0	.0
Primary Contact Recreation	64,778.0	100.0	.0	.0
Secondary Contact Recreation	64,778.0	100.0	.0	.0

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Arkansas Causes of Impairment
for Threatened and Impaired Lakes, Reservoirs, and Ponds
Reporting Year 2008

Description of this table

Cause of Impairment	Cause of Impairment Group	Acres Threatened or Impaired
Mercury	Mercury	23,510.0
Phosphorus, Total	Nutrients	6,513.0
Sedimentation/Siltation	Sediment	4,735.0
Copper	Metals (other than Mercury)	335.0
Dioxin (Including 2,3,7,8-TCDD)	Dioxins	10.0

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Arkansas Probable Sources of Impairments
for Threatened and Impaired Lakes, Reservoirs, and Ponds
Reporting Year 2008

Description of this table

Probable Source	Probable Source Group	Acres Threatened or Impaired
Source Unknown	Unknown	5,181.0
Industrial Point Source Discharge	Industrial	10.0

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Arkansas Causes of Impairment for Reporting Year 2008

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.
Cause of Impairment Group	Size of Assessed Waters with Listed Causes of Impairment
	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Ammonia	11.5
Dioxins	44.8	10.0
Mercury	307.0	23,510.0
Metals (other than Mercury)	1,447.8	335.0
Nutrients	121.3	6,513.0
Organic Enrichment/Oxygen Depletion	1,309.9
Pathogens	796.8
pH/Acidity/Caustic Conditions	200.0
Salinity/Total Dissolved Solids/Chlorides/Sulfates	1,369.7
Sediment	1,787.0	4,735.0
Temperature	86.1
Turbidity	49.4

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Arkansas Probable Sources Contributing to Impairments
for Reporting Year 2008

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	1,073.6
Construction	288.6
Hydromodification	9.2
Industrial	182.0	10.0
Municipal Dishcarges/Sewage	195.5
Resource Extraction	166.5
Unknown	1,794.3	5,181.0
Urban-Related Runoff/Stormwater	14.1

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Arkansas TMDL Alternatives by Cause of Impairment 2008

Description of this table

NOTE: Click on the underlined "Number of TMDL Alternatives by Cause of Impairment " value to see a listing of those Causes of Impairment.
Cause of Impairment	Number of TMDL Alternatives	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Dioxin (Including 2,3,7,8-TCDD)	2	45	10

Total: 2 TMDL Alternatives

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Arkansas Previously Impaired Waters Now Attaining All Uses

No previously impaired waters reported as attaining all uses.

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Arkansas Causes of Impairment for 303(d) Listed Waters

Description of this table

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.
Cause of Impairment Group Name	Number of Causes of Impairment Reported
Metals (other than Mercury)	113
Salinity/Total Dissolved Solids/Chlorides/Sulfates	111
Organic Enrichment/Oxygen Depletion	62
Sediment	42
Pathogens	38
pH/Acidity/Caustic Conditions	16
Nutrients	12
Temperature	9

Total: 403 Causes of Impairment

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Arkansas Cumulative TMDLs by Pollutant

This chart includes TMDLs since October 1, 1995.

Description of this table

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.
Pollutant	Number of TMDLs	Number of Causes of Impairment Addressed
Total Suspended Solids (TSS)	40	40
Mercury in Fish Tissue	36	36
Fecal Coliform	34	34
Escherichia Coli (E. Coli)	32	32
Siltation/Turbidity	18	18
Total Dissolved Solids (TDS)	9	9
Chloride	8	8
Turbidity	7	7
Copper	6	6
Nitrate	6	6
Phosphorus, Total	6	6
Sulfate	6	6
Zinc	5	5
Ammonia Nitrogen	4	4
Chlorides	3	3
Phosphorus	3	3
Ammonia	2	2
Oxygen Demand	2	2
Carbonaceous Bod	1	1
Lead	1	1
Mercury	1	1
Nitrates	1	1
Sulfates	1	1

Total: 232 TMDLs; 232 Causes of Impairment Addressed

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Arkansas Cumulative Number of TMDLs

EPA Fiscal Year starts October 1 and ends September 30.

Description of this table

NOTE: Click on the underlined "Number of TMDLs Completed" value for a detailed list of the TMDLs for the fiscal year.
Fiscal Year	Number of TMDLs	Number of Causes of Impairment Addressed
2001	6	6
2002	7	7
2003	44	44
2004	11	11
2005	13	13
2006	45	45
2007	62	62
2008	34	34
2009	10	10

Total: 232 TMDLs; 232 Causes of Impairment Addressed

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