Watershed Quality Assessment Report | WATERS

Assessment Summary
Causes of Impairment
Probable Sources Contributing to Impairment
TMDL Alternatives by Cause of Impairment
Cumulative TMDLs by Pollutant

Delaware State Report
Other states that contain this watershed:
Maryland, Brandywine-Christina Watershed
Pennsylvania, Brandywine-Christina Watershed

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Delaware, Brandywine-Christina Watershed

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Features

Assessment Summary for Reporting Year 2006
Delaware, Brandywine-Christina Watershed

Description of this table
Click here to list Threatened and Impaired Waters Only

Waterbody Name	Waterbody ID	Location	Map	Waterbody Type	Size	Units	Status	State TMDL Development Status
NOTE: Click on the underlined "Waterbody Name" to view a Waterbody report.
All Other Tributaries Located In The Watershed But Not On	DE260-003_00	Red Clay Creek	Waterbody Map	River	10.3	Miles	Impaired	TMDL needed
All Other Tributaries Located In The Watershed But Not On	DE300-001_03	Shellpot Creek	Waterbody Map	River	7.6	Miles	Impaired	TMDL needed
All Tributaries From The Headwaters Of Appoquinimink River	DE010-001_04	Appoquinimink River	Waterbody Map	River	10.3	Miles	Impaired	TMDL needed
All Tributaries From The Headwaters To The Confluence With	DE030-003_00	Blackbird Creek	Waterbody Map	River	9.7	Miles	Impaired	TMDL completed
All Tributaries From The Headwaters To The Confluence With	DE320-005_00	White Clay Creek	Waterbody Map	River	14.2	Miles	Impaired	TMDL needed
All Tributaries On Brandywine Creek From The Headwaters At	DE040-003_00	Brandywine River	Waterbody Map	River	19.3	Miles	Impaired	TMDL needed
Becks Pond	DE120-L02_00	Christina River	Waterbody Map	Freshwater Lake	25.6	Acres	Impaired	TMDL needed
Belltown Run	DE120-004_02	Christina River	Waterbody Map	River	5.6	Miles	Impaired	TMDL completed
Burroughs Run From Pennsylvania State Line Run	DE260-002_00	Red Clay Creek	Waterbody Map	River	4.5	Miles	Impaired	TMDL completed
Chesapeake And Delaware Canal From Maryland Line To Delaware	DE090-001_00	Chesapeake And Delaware Canal	Waterbody Map	River	15.0	Miles	Impaired	TMDL needed
Chesapeake And Delaware Canal Tributaries Located In The	DE090-003_00	Chesapeake & Delaware Canal	Waterbody Map	River	46.2	Miles	Impaired	TMDL needed
Chesapeake And Delaware Canal Tributaries On Canal From Md	DE090-002_00	Chesapeake & Delaware Canal	Waterbody Map	River	14.5	Miles	Impaired	TMDL needed
Chestnut Run	DE120-007_02	Christina River	Waterbody Map	River	2.8	Miles	Impaired	TMDL needed
Christina River Tributaries From Smalleys Pond Overflow To	DE120-003_02	Christina River	Waterbody Map	River	3.1	Miles	Impaired	TMDL completed
Christina River, Tributaries On The Christina River Between	DE120-002_01	Christina River	Waterbody Map	River	3.0	Miles	Impaired	TMDL completed
Hoopes Reservoir	DE260-L01_00	Red Clay Creek	Waterbody Map	Freshwater Lake	200.0	Acres	Impaired	TMDL needed
Little Mill Creek	DE120-007_01	Christina River	Waterbody Map	River	12.8	Miles	Impaired	TMDL needed
Lower Appoquinimink River	DE010-001_01	Appoquinimink River	Waterbody Map	River	7.1	Miles	Impaired	TMDL completed
Lower Appoquinimink River - Drawyer Creek	DE010-001_03	Appoquinimink River	Waterbody Map	River	19.5	Miles	Impaired	TMDL completed
Lower Army Creek	DE020-001_00	Army Creek	Waterbody Map	River	6.8	Miles	Impaired	TMDL completed
Lower Blackbird Creek	DE030-001_00	Blackbird Creek	Waterbody Map	River	13.8	Miles	Impaired	TMDL completed
Lower Brandywine River	DE040-001_00	Brandywine River	Waterbody Map	River	3.8	Miles	Impaired	TMDL completed
Lower Christina Creek	DE120-004_01	Christina River	Waterbody Map	River	8.4	Miles	Impaired	TMDL completed
Lower Christina River	DE120-001_00	Christina River	Waterbody Map	River	1.5	Miles	Impaired	TMDL needed
Lower Dragon Run Creek	DE130-001_00	Dragon Run Creek	Waterbody Map	River	3.2	Miles	Impaired	TMDL completed
Lower Red Lion Creek	DE270-001_01	Red Lion Creek	Waterbody Map	River	3.7	Miles	Impaired	TMDL needed
Lower Shellpot Creek	DE300-001_01	Shellpot Creek	Waterbody Map	River	1.0	Miles	Impaired	TMDL needed
Lums Pond	DE090-L01_00	Chesapeake And Delaware Canal	Waterbody Map	Freshwater Lake	189.3	Acres	Impaired	TMDL completed
Mid Christina River, Between White Clay Creek And Brandywine	DE120-002_00	Christina River	Waterbody Map	River	8.5	Miles	Impaired	TMDL needed
Middle Run	DE320-004_00	White Clay Creek	Waterbody Map	River	5.8	Miles	Impaired	TMDL needed
Mill Creek	DE320-002_00	White Clay Creek	Waterbody Map	River	16.6	Miles	Impaired	TMDL needed
Muddy Run	DE120-004_03	Christina River	Waterbody Map	River	13.1	Miles	Impaired	TMDL needed
Nonesuch Creek	DE120-003_01	Christina River	Waterbody Map	River	3.0	Miles	Impaired	TMDL needed
Noxontown Pond	DE010-L01_00	Appoquinimink River	Waterbody Map	Freshwater Lake	158.6	Acres	Impaired	TMDL completed
Pike Creek	DE320-003_00	White Clay Creek	Waterbody Map	River	8.2	Miles	Impaired	TMDL needed
Red Clay Creek From Pennsylvania State Line	DE260-001_00	Red Clay Creek	Waterbody Map	River	12.8	Miles	Impaired	TMDL needed
Shallcross Lake	DE010-L03_00	Appoquinimink River	Waterbody Map	Freshwater Lake	43.1	Acres	Impaired	TMDL completed
Silver Lake	DE010-L02_00	Appoquinimink River	Waterbody Map	Freshwater Lake	38.7	Acres	Impaired	TMDL completed
Smalleys Pond	DE120-L01_00	Christina River	Waterbody Map	Freshwater Lake	30.0	Acres	Impaired	TMDL completed
Sunset Pond	DE120-L03_00	Christina River	Waterbody Map	Freshwater Lake	40.0	Acres	Impaired	TMDL completed
Tributaries Located In The Watershed But Not On Mainstem Red	DE270-001_03	Red Lion Creek	Waterbody Map	River	1.8	Miles	Impaired	TMDL needed
Upper Appoquinimink - Wiggins Mill Pond Branch	DE010-002_01	Appoquinimink River	Waterbody Map	River	3.4	Miles	Good
Upper Appoquinimink River - Odessa	DE010-001_02	Appoquinimink River	Waterbody Map	River	6.1	Miles	Impaired	TMDL needed
Upper Appoquinimink, Deep Creek To Confluence With Silver	DE010-002_02	Appoquinimink River	Waterbody Map	River	4.4	Miles	Good
Upper Army Creek	DE020-002_00	Army Creek	Waterbody Map	River	1.9	Miles	Impaired	TMDL completed
Upper Blackbird Creek	DE030-002_00	Blackbird Creek	Waterbody Map	River	13.6	Miles	Impaired	TMDL completed
Upper Brandywine Creek, From State Line To Wilmington	DE040-002_00	Brandywine River	Waterbody Map	River	9.3	Miles	Impaired	TMDL completed
Upper Christina Creek	DE120-006_00	Christina River	Waterbody Map	River	10.8	Miles	Impaired	TMDL completed
Upper Christina River	DE120-003_00	Christina River	Waterbody Map	River	6.9	Miles	Impaired	TMDL needed
Upper Dragon Run Creek	DE130-002_00	Dragon Run Creek	Waterbody Map	River	4.5	Miles	Impaired	TMDL needed
Upper Naamans Creek Including North Br. And South Br.	DE230-001_02	Naamans Creek	Waterbody Map	River	11.0	Miles	Impaired	TMDL needed
Upper Red Lion Creek, Headwaters To Route 13	DE270-001_02	Red Lion Creek	Waterbody Map	River	6.0	Miles	Impaired	TMDL needed
Upper Shellpot Creek	DE300-001_02	Shellpot Creek	Waterbody Map	River	14.2	Miles	Impaired	TMDL needed
West Branch Including Persimmon Run And Stine Haskell Branch	DE120-005_01	Christina River	Waterbody Map	River	5.3	Miles	Impaired	TMDL completed
White Clay Creek From Pennsylvania State Line	DE320-001_00	White Clay Creek	Waterbody Map	River	18.2	Miles	Impaired	TMDL needed

NOTE: Click on the underlined "Waterbody Name" to view a Waterbody report.
Waterbody Name	Waterbody ID	Location	Map	Waterbody Type	Size	Units	Status	State TMDL Development Status
All Other Tributaries Located In The Watershed But Not On	DE260-003_00	Red Clay Creek	Waterbody Map	River	10.3	Miles	Impaired	TMDL needed
All Other Tributaries Located In The Watershed But Not On	DE300-001_03	Shellpot Creek	Waterbody Map	River	7.6	Miles	Impaired	TMDL needed
All Tributaries From The Headwaters Of Appoquinimink River	DE010-001_04	Appoquinimink River	Waterbody Map	River	10.3	Miles	Impaired	TMDL needed
All Tributaries From The Headwaters To The Confluence With	DE030-003_00	Blackbird Creek	Waterbody Map	River	9.7	Miles	Impaired	TMDL completed
All Tributaries From The Headwaters To The Confluence With	DE320-005_00	White Clay Creek	Waterbody Map	River	14.2	Miles	Impaired	TMDL needed
All Tributaries On Brandywine Creek From The Headwaters At	DE040-003_00	Brandywine River	Waterbody Map	River	19.3	Miles	Impaired	TMDL needed
Becks Pond	DE120-L02_00	Christina River	Waterbody Map	Freshwater Lake	25.6	Acres	Impaired	TMDL needed
Belltown Run	DE120-004_02	Christina River	Waterbody Map	River	5.6	Miles	Impaired	TMDL completed
Burroughs Run From Pennsylvania State Line Run	DE260-002_00	Red Clay Creek	Waterbody Map	River	4.5	Miles	Impaired	TMDL completed
Chesapeake And Delaware Canal From Maryland Line To Delaware	DE090-001_00	Chesapeake And Delaware Canal	Waterbody Map	River	15.0	Miles	Impaired	TMDL needed
Chesapeake And Delaware Canal Tributaries Located In The	DE090-003_00	Chesapeake & Delaware Canal	Waterbody Map	River	46.2	Miles	Impaired	TMDL needed
Chesapeake And Delaware Canal Tributaries On Canal From Md	DE090-002_00	Chesapeake & Delaware Canal	Waterbody Map	River	14.5	Miles	Impaired	TMDL needed
Chestnut Run	DE120-007_02	Christina River	Waterbody Map	River	2.8	Miles	Impaired	TMDL needed
Christina River Tributaries From Smalleys Pond Overflow To	DE120-003_02	Christina River	Waterbody Map	River	3.1	Miles	Impaired	TMDL completed
Christina River, Tributaries On The Christina River Between	DE120-002_01	Christina River	Waterbody Map	River	3.0	Miles	Impaired	TMDL completed
Hoopes Reservoir	DE260-L01_00	Red Clay Creek	Waterbody Map	Freshwater Lake	200.0	Acres	Impaired	TMDL needed
Little Mill Creek	DE120-007_01	Christina River	Waterbody Map	River	12.8	Miles	Impaired	TMDL needed
Lower Appoquinimink River	DE010-001_01	Appoquinimink River	Waterbody Map	River	7.1	Miles	Impaired	TMDL completed
Lower Appoquinimink River - Drawyer Creek	DE010-001_03	Appoquinimink River	Waterbody Map	River	19.5	Miles	Impaired	TMDL completed
Lower Army Creek	DE020-001_00	Army Creek	Waterbody Map	River	6.8	Miles	Impaired	TMDL completed
Lower Blackbird Creek	DE030-001_00	Blackbird Creek	Waterbody Map	River	13.8	Miles	Impaired	TMDL completed
Lower Brandywine River	DE040-001_00	Brandywine River	Waterbody Map	River	3.8	Miles	Impaired	TMDL completed
Lower Christina Creek	DE120-004_01	Christina River	Waterbody Map	River	8.4	Miles	Impaired	TMDL completed
Lower Christina River	DE120-001_00	Christina River	Waterbody Map	River	1.5	Miles	Impaired	TMDL needed
Lower Dragon Run Creek	DE130-001_00	Dragon Run Creek	Waterbody Map	River	3.2	Miles	Impaired	TMDL completed
Lower Red Lion Creek	DE270-001_01	Red Lion Creek	Waterbody Map	River	3.7	Miles	Impaired	TMDL needed
Lower Shellpot Creek	DE300-001_01	Shellpot Creek	Waterbody Map	River	1.0	Miles	Impaired	TMDL needed
Lums Pond	DE090-L01_00	Chesapeake And Delaware Canal	Waterbody Map	Freshwater Lake	189.3	Acres	Impaired	TMDL completed
Mid Christina River, Between White Clay Creek And Brandywine	DE120-002_00	Christina River	Waterbody Map	River	8.5	Miles	Impaired	TMDL needed
Middle Run	DE320-004_00	White Clay Creek	Waterbody Map	River	5.8	Miles	Impaired	TMDL needed
Mill Creek	DE320-002_00	White Clay Creek	Waterbody Map	River	16.6	Miles	Impaired	TMDL needed
Muddy Run	DE120-004_03	Christina River	Waterbody Map	River	13.1	Miles	Impaired	TMDL needed
Nonesuch Creek	DE120-003_01	Christina River	Waterbody Map	River	3.0	Miles	Impaired	TMDL needed
Noxontown Pond	DE010-L01_00	Appoquinimink River	Waterbody Map	Freshwater Lake	158.6	Acres	Impaired	TMDL completed
Pike Creek	DE320-003_00	White Clay Creek	Waterbody Map	River	8.2	Miles	Impaired	TMDL needed
Red Clay Creek From Pennsylvania State Line	DE260-001_00	Red Clay Creek	Waterbody Map	River	12.8	Miles	Impaired	TMDL needed
Shallcross Lake	DE010-L03_00	Appoquinimink River	Waterbody Map	Freshwater Lake	43.1	Acres	Impaired	TMDL completed
Silver Lake	DE010-L02_00	Appoquinimink River	Waterbody Map	Freshwater Lake	38.7	Acres	Impaired	TMDL completed
Smalleys Pond	DE120-L01_00	Christina River	Waterbody Map	Freshwater Lake	30.0	Acres	Impaired	TMDL completed
Sunset Pond	DE120-L03_00	Christina River	Waterbody Map	Freshwater Lake	40.0	Acres	Impaired	TMDL completed
Tributaries Located In The Watershed But Not On Mainstem Red	DE270-001_03	Red Lion Creek	Waterbody Map	River	1.8	Miles	Impaired	TMDL needed
Upper Appoquinimink River - Odessa	DE010-001_02	Appoquinimink River	Waterbody Map	River	6.1	Miles	Impaired	TMDL needed
Upper Army Creek	DE020-002_00	Army Creek	Waterbody Map	River	1.9	Miles	Impaired	TMDL completed
Upper Blackbird Creek	DE030-002_00	Blackbird Creek	Waterbody Map	River	13.6	Miles	Impaired	TMDL completed
Upper Brandywine Creek, From State Line To Wilmington	DE040-002_00	Brandywine River	Waterbody Map	River	9.3	Miles	Impaired	TMDL completed
Upper Christina Creek	DE120-006_00	Christina River	Waterbody Map	River	10.8	Miles	Impaired	TMDL completed
Upper Christina River	DE120-003_00	Christina River	Waterbody Map	River	6.9	Miles	Impaired	TMDL needed
Upper Dragon Run Creek	DE130-002_00	Dragon Run Creek	Waterbody Map	River	4.5	Miles	Impaired	TMDL needed
Upper Naamans Creek Including North Br. And South Br.	DE230-001_02	Naamans Creek	Waterbody Map	River	11.0	Miles	Impaired	TMDL needed
Upper Red Lion Creek, Headwaters To Route 13	DE270-001_02	Red Lion Creek	Waterbody Map	River	6.0	Miles	Impaired	TMDL needed
Upper Shellpot Creek	DE300-001_02	Shellpot Creek	Waterbody Map	River	14.2	Miles	Impaired	TMDL needed
West Branch Including Persimmon Run And Stine Haskell Branch	DE120-005_01	Christina River	Waterbody Map	River	5.3	Miles	Impaired	TMDL completed
White Clay Creek From Pennsylvania State Line	DE320-001_00	White Clay Creek	Waterbody Map	River	18.2	Miles	Impaired	TMDL needed

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Causes of Impairment for Reporting Year 2006

Delaware, Brandywine-Christina

Description of this table

Cause of Impairment	Size of Assessed Waters with Listed Causes of Impairment
NOTE: Click on the underlined "Cause of Impairment" value to see a listing of those waters with that cause of impairment.
Cause of Impairment	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Chlordane	31.8
Habitat Assessment (Streams)	125.4
Enterococcus Bacteria	260.0	95.6
Polychlorinated Biphenyls (PCBs)	73.5	25.6
DDT	12.8
Dieldrin	37.8
Zinc	12.8
Cause Unknown	6.9
Phosphorus, Total	278.8	417.9
Nitrate/Nitrite (Nitrite + Nitrate as N)	52.5	240.4
Nitrogen, Total	226.3	259.3
Organic Enrichment (Sewage) Biological Indicators	3.2
Dioxin (Including 2,3,7,8-TCDD)	31.5
Mercury		25.6

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Probable Sources Contributing to Impairments for Reporting Year 2006

Delaware, Brandywine-Christina Watershed

Description of this table

Probable Source	Size of Assessed Waters with Probable Sources of Impairments
Probable Source	Rivers and Streams (Miles)	Lakes, Reservoirs, and Ponds (Acres)
Agriculture	98.5	95.6
Combined Sewer Overflows	9.3
Construction Stormwater Discharge (Permitted)	8.2
Industrial Point Source Discharge	50.3
Municipal Point Source Discharges	9.3
Natural Sources	12.2
On-Site Treatment Systems (Septic Systems And Similar Decencentralized Systems)	13.6
Rcra Hazardous Waste Sites	10.0
Site Clearance (Land Development Or Redevelopment)	8.2
Source Unknown	59.3	95.6

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TMDL Alternatives by Cause of Impairment for Reporting Year 2006

Delaware, Brandywine-Christina Watershed

No TMDL Alternatives reported.

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Cumulative TMDLs by Pollutant

Delaware, Brandywine-Christina Watershed

This chart includes TMDLs since October 1, 1995.

Description of this table

Pollutant	Number of TMDLs Completed	Number of Causes of Impairment Addressed
NOTE: Click on the underlined "Number of TMDLs Completed" value to see a listing of those approved TMDLs for the pollutant.
Phosphorus	55	55
Bacteria	42	42
Nitrogen	36	36
Dissolved Oxygen	25	25
Nutrients	3	3
Zinc	3	3
Habitat	2	2
Ammonia	1	1
Biochemical Oxygen Demand (BOD)	1	1
Carbonaceous Bod	1	1
Escherichia Coli (E. Coli)	1	1
Fecal Coliform	1	1
NH3-N	1	1
Nitrogen, Total	1	1

Total: 173 TMDLs; 0 Causes of Impairment

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Delaware, Brandywine-Christina Watershed

Features

Assessment Summary for Reporting Year 2006Delaware, Brandywine-Christina Watershed

Causes of Impairment for Reporting Year 2006

Delaware, Brandywine-Christina

Probable Sources Contributing to Impairments for Reporting Year 2006

Delaware, Brandywine-Christina Watershed

TMDL Alternatives by Cause of Impairment for Reporting Year 2006

Delaware, Brandywine-Christina Watershed

Cumulative TMDLs by Pollutant

Delaware, Brandywine-Christina Watershed

Assessment Summary for Reporting Year 2006
Delaware, Brandywine-Christina Watershed