Waterbody Quality Assessment Report | WATERS

Causes of Impairment
TMDLs That Apply to This Waterbody
Previous Causes of Impairment Now Attaining All Uses

State: California
Waterbody ID:
Other ID: CA404.0420R CONEJO CK NF
Location:
State Waterbody Type: Stream/Creek/River
EPA Waterbody Type: Rivers and Streams
Water Size: 6.51
Units: miles
Watershed Name: Calleguas

Waterbody History Report

Data are also available for these years: 1996

1998 Waterbody Report for Conejo Creek / Arroyo Conejo North Fork

Waterbody Map Not Available

Features

Causes of Impairment for Reporting Year 1998

Description of this table

Cause of Impairment	Cause of Impairment Group	State TMDL Development Status
Ammonia	Ammonia	TMDL completed
Chlordane	Pesticides	TMDL needed
DDT	Pesticides	TMDL needed
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	TMDL needed
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	TMDL needed

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TMDLs That Apply to this waterbody

Description of this table

TMDL Document Name	TMDL Date	TMDL Pollutant Description	TMDL Pollutant Source Type	Cause(s) of Impairment Addressed
Calleguas Creek, Its Tributaries And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Oct-15-2009	Ammonia Nitrogen	Point/Nonpoint Source	Ammonia, Un-ionized; Ammonia
Calleguas Creek, Tributaries, And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Jun-20-2003	Algae	Point/Nonpoint Source	Ammonia, Un-ionized; Ammonia
Calleguas Creek, Tributaries, And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Jun-20-2003	Ammonia	Point/Nonpoint Source	Ammonia, Un-ionized; Ammonia
Calleguas Creek, Tributaries, And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Jun-20-2003	Nitrate/Nitrite	Point/Nonpoint Source	Ammonia; Ammonia, Un-ionized
Calleguas Creek, Tributaries, And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Jun-20-2003	Nitrogen	Point/Nonpoint Source	Ammonia; Ammonia, Un-ionized
Calleguas Creek, Tributaries, And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Jun-20-2003	Organic Enrichment/Low Dissolved Oxygen	Point/Nonpoint Source	Ammonia, Un-ionized; Ammonia

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Previous Causes of Impairments Now Attaining All Uses

No causes of impairment are recorded as attaining all uses for this waterbody.

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