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: CA404.0340R CONEJO CK R2
Location:
State Waterbody Type: Stream/Creek/River
EPA Waterbody Type: Rivers and Streams
Water Size: 2.67
Units: miles
Watershed Name: Calleguas

Waterbody History Report

1998 Waterbody Report for Conejo Creek Reach 2 (Santa Rosa Rd To Tho. Oaks City Limit)

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
Algae	Algal Growth	TMDL completed
Ammonia	Ammonia	TMDL completed
Cadmium	Metals (other than Mercury)	TMDL needed
Chema	Other Cause	TMDL needed
Chloride	Salinity/Total Dissolved Solids/Chlorides/Sulfates	TMDL needed
Chromium, Total	Metals (other than Mercury)	TMDL needed
DDT	Pesticides	TMDL needed
Dacthal	Pesticides	TMDL needed
Endosulfan	Pesticides	TMDL needed
Nickel	Metals (other than Mercury)	TMDL completed
Organic Enrichment/Low Dissolved Oxygen	Organic Enrichment/Oxygen Depletion	TMDL completed
Silver	Metals (other than Mercury)	TMDL needed
Sulfates	Salinity/Total Dissolved Solids/Chlorides/Sulfates	TMDL needed
Total Dissolved Solids (TDS)	Salinity/Total Dissolved Solids/Chlorides/Sulfates	TMDL needed
Toxaphene	Pesticides	TMDL needed
Toxicity	Total Toxics	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 Metals Tmdl	Mar-26-2007	Copper	Point/Nonpoint Source	Nickel
Calleguas Creek, Its Tributaries And Mugu Lagoon Metals Tmdl	Mar-26-2007	Mercury	Point/Nonpoint Source	Nickel
Calleguas Creek, Its Tributaries And Mugu Lagoon Metals Tmdl	Mar-26-2007	Nickel	Point/Nonpoint Source	Nickel
Calleguas Creek, Its Tributaries And Mugu Lagoon Metals Tmdl	Mar-26-2007	Selenium	Point/Nonpoint Source	Nickel
Calleguas Creek, Its Tributaries And Mugu Lagoon Metals Tmdl	Mar-26-2007	Zinc	Nonpoint Source	Nickel
Calleguas Creek, Its Tributaries And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Oct-15-2009	Ammonia Nitrogen	Point/Nonpoint Source	Organic Enrichment/Low Dissolved Oxygen; Algae; Ammonia
Calleguas Creek, Tributaries, And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Jun-20-2003	Algae	Point/Nonpoint Source	Ammonia; Algae; Organic Enrichment/Low Dissolved Oxygen
Calleguas Creek, Tributaries, And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Jun-20-2003	Ammonia	Point/Nonpoint Source	Ammonia; Organic Enrichment/Low Dissolved Oxygen; Algae
Calleguas Creek, Tributaries, And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Jun-20-2003	Nitrate/Nitrite	Point/Nonpoint Source	Algae; Organic Enrichment/Low Dissolved Oxygen; Ammonia
Calleguas Creek, Tributaries, And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Jun-20-2003	Nitrogen	Point/Nonpoint Source	Ammonia; Algae; Organic Enrichment/Low Dissolved Oxygen
Calleguas Creek, Tributaries, And Mugu Lagoon Nitrogen Compounds And Related Effects Tmdl	Jun-20-2003	Organic Enrichment/Low Dissolved Oxygen	Point/Nonpoint Source	Organic Enrichment/Low Dissolved Oxygen; Ammonia; Algae

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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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