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Red Rock TMDL Development
Page history
last edited
by Christina Staten 2 years, 5 months ago
Navigate to Other TMDL Project Pages:
Red Rock Home Page Project Outreach
Page Contents
What is a TMDL?
Think of a total maximum daily load (TMDL) as a pollution diet or pollution budget. It is the maximum amount of a pollutant that a stream or waterbody can receive and still meet water quality standards. A TMDL can often be calculated using a simple equation that involves streamflow and pollutant concentration to express the allowable load in pounds per day, although TMDLs can also be expressed as a percent reduction in loading.
Completed TMDLs for the Red Rock
One TMDL document has been completed for the Red Rock TMDL Planning Area. The TMDLs it contains are shown in the table below.
|
TMDL Document
|
Waterbody (Assessment Unit)
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Assessment Unit ID
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Metal TMDL(s)1
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E. coli TMDL1
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Sediment TMDL1
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Non-Pollutant Impairment Discussed in TMDL Document1
|
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2021 Red Rock Metals, Sediment, and E. coli TMDLs and Water Quality Improvement Plan
Found at:
https://deq.mt.gov/water/Programs/sw
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Bean Creek,
Headwaters to mouth (Red Rock River)
|
MT41A004_140
|
--
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers,
Flow Regime Modification
|
|
Big Sheep Creek,
Headwaters to mouth (Red Rock River)
|
MT41A003_150
|
--
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers,
Flow Regime Modification
|
|
Bloody Dick Creek,
Headwaters to mouth (Horse Prairie Creek)
|
MT41A003_100
|
Aluminum,
Lead
|
--
|
--
|
--
|
|
Cabin Creek,
Headwaters to mouth (Big Sheep Creek)
|
MT41A003_030
|
--
|
--
|
--
|
Alteration in stream-side or littoral vegetative covers
|
|
Corral Creek,
Headwaters to mouth (Red Rock Creek)
|
MT41A004_040
|
--
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers
|
|
East Fork Clover Creek,
Headwaters to mouth (Clover Creek)
|
MT41A004_050
|
--
|
--
|
Sediment
|
--
|
|
Fish Creek,
Headwaters to mouth (Metzel Creek)
|
MT41A004_030
|
Aluminum
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers
|
|
Hell Roaring Creek,
Headwaters to mouth (Red Rock Creek)
|
MT41A004_060
|
--
|
--
|
--
|
Alteration in stream-side or littoral vegetative covers
|
|
Horse Prairie Creek,
Headwaters to mouth (Clark Canyon Reservoir)
|
MT41A003_090
|
--
|
E. coli
|
Sediment
|
Flow Regime Modification
|
|
Jones Creek,
Headwaters to mouth (Winslow Creek)
|
MT41A004_130
|
--
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers,
Flow Regime Modification
|
|
Little Sheep Creek,
Headwaters to mouth (Red Rock River)
|
MT41A003_160
|
Iron
|
--
|
--
|
Alteration in stream-side or littoral vegetative covers,
Habitat Alterations
|
|
Long Creek,
Headwaters to mouth (Red Rock River)
|
MT41A004_070
|
--
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers,
Flow Regime Modification
|
|
Medicine Lodge Creek,
Headwaters to mouth (Horse Prairie Creek)
|
MT41A003_010
|
Iron
|
E. coli
|
Sediment
|
Alteration in stream-side or littoral vegetative covers,
Flow Regime Modification
|
|
Metzel Creek,
Headwaters to mouth (Red Rock River)
|
MT41A004_020
|
Arsenic
|
--
|
--
|
--
|
|
Muddy Creek,
Confluence Sourdough and Wilson Creek to mouth (Big Sheep Creek)
|
MT41A003_020
|
Arsenic,
Iron
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers
|
|
Nicholia Creek,
Headwaters to mouth (Big Sheep Creek)
|
MT41A003_040
|
Aluminum
|
--
|
--
|
--
|
|
O’Dell Creek,
Headwaters to mouth (Lower Red Rock Lake)
|
MT41A004_080
|
--
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers
|
|
Peet Creek,
Headwaters to mouth (Red Rock River)
|
MT41A004_090
|
Arsenic,
Cadmium,
Copper,
Selenium
|
E. coli
|
Sediment
|
Alteration in stream-side or littoral vegetative covers,
Flow Regime Modification
|
|
Price Creek,
Headwaters to mouth (Red Rock River)
|
MT41A004_010
|
Arsenic
|
--
|
Sediment
|
Flow Regime Modification
|
|
Red Rock Creek,
Headwaters to mouth (Upper Red Rock Lake)
|
MT41A004_110
|
--
|
--
|
Sediment
|
--
|
|
Red Rock River,
Lower Red Rock Lake to Lima Dam
|
MT41A001_020
|
--
|
E. coli
|
--
|
|
|
Sage Creek,
Headwaters to mouth (Red Rock River)
|
MT41A003_140
|
--
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers
|
|
Selway Creek,
Headwaters to mouth (Bloody Dick Creek)
|
MT41A003_110
|
--
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers
|
|
Tom Creek,
Headwaters to mouth (Upper Red Rock Lake)
|
MT41A004_100
|
--
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers,
Flow Regime Modification
|
|
Trail Creek,
Headwaters to mouth (Horse Prairie Creek)
|
MT41A003_080
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Aluminum
|
--
|
Sediment
|
Alteration in stream-side or littoral vegetative covers
|
|
1 Impairment causes identified in Montana’s 2020 Water Quality Integrated Report
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TMDLs Still to be Written in the Red Rock
The table below contains the list of pollutant impairments found in the 2020 Integrated Report for the Red Rock TMDL Planning Area without a completed TMDL. A schedule has not been determined for development of these TMDLs.
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Waterbody
(Assessment Unit)
|
Assessment Unit ID
|
Nutrient TMDL(s)1
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Metal TMDL1
|
Sediment TMDL1
|
Temperature TMDL1
|
|
Big Sheep Creek,
Headwaters to mouth (Red Rock River)
|
MT41A003_150
|
Total Nitrogen,
Total Phosphorus
|
--
|
--
|
--
|
|
Bloody Dick Creek,
Headwaters to mouth (Horse Prairie Creek)
|
MT41A003_100
|
Total Phosphorus
|
--
|
--
|
--
|
|
Cabin Creek,
Headwaters to mouth (Big Sheep Creek)
|
MT41A003_030
|
Total Phosphorus
|
--
|
--
|
--
|
|
Corral Creek,
Headwaters to mouth (Red Rock Creek)
|
MT41A004_040
|
Total Phosphorus
|
--
|
--
|
--
|
|
East Fork Clover Creek,
Headwaters to mouth (Clover Creek)
|
MT41A004_050
|
Total Phosphorus
|
--
|
--
|
--
|
|
Fish Creek,
Headwaters to mouth (Metzel Creek)
|
MT41A004_030
|
Total Nitrogen,
Total Phosphorus
|
--
|
--
|
--
|
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Horse Prairie Creek,
Headwaters to mouth (Clark Canyon Reservoir)
|
MT41A003_090
|
Total Nitrogen,
Total Phosphorus
|
Mercury
|
--
|
--
|
|
Jones Creek,
Headwaters to mouth (Winslow Creek)
|
MT41A004_130
|
Total Phosphorus
|
--
|
--
|
--
|
|
Little Sheep Creek,
Headwaters to mouth (Red Rock River)
|
MT41A003_160
|
Total Nitrogen,
Total Phosphorus
|
--
|
--
|
--
|
|
Lower Red Rock Lake
|
MT41A005_020
|
--
|
--
|
Sediment
|
--
|
|
Medicine Lodge Creek,
Headwaters to mouth (Horse Prairie Creek)
|
MT41A003_010
|
Total Nitrogen,
Total Phosphorus
|
--
|
--
|
Temperature
|
|
Metzel Creek,
Headwaters to mouth (Red Rock River)
|
MT41A004_020
|
Total Phosphorus
|
--
|
--
|
--
|
|
Muddy Creek,
Confluence Sourdough and Wilson Creek to mouth (Big Sheep Creek)
|
MT41A003_020
|
Total Phosphorus
|
--
|
--
|
--
|
|
Nicholia Creek,
Headwaters to mouth (Big Sheep Creek)
|
MT41A003_040
|
Total Nitrogen,
Total Phosphorus
|
--
|
--
|
--
|
|
Peet Creek,
Headwaters to mouth (Red Rock River)
|
MT41A004_090
|
Total Nitrogen,
Total Phosphorus
|
--
|
--
|
--
|
|
Price Creek,
Headwaters to mouth (Red Rock River)
|
MT41A004_010
|
Total Phosphorus
|
--
|
--
|
--
|
|
Red Rock River,
Lower Red Rock Lake to Lima Dam
|
MT41A001_020
|
Total Nitrogen,
Total Phosphorus
|
--
|
Sediment
|
Temperature
|
|
Red Rock River,
Lima Dam to Clark Canyon Reservoir
|
MT41A001_010
|
Total Nitrogen,
Total Phosphorus
|
--
|
Sediment
|
Temperature
|
|
Sage Creek,
Headwaters to mouth (Red Rock River)
|
MT41A003_140
|
Total Nitrogen,
Total Phosphorus
|
--
|
--
|
--
|
|
Selway Creek,
Headwaters to mouth (Bloody Dick Creek)
|
MT41A003_110
|
Total Phosphorus
|
--
|
--
|
--
|
|
Trail Creek,
Headwaters to mouth (Horse Prairie Creek)
|
MT41A003_080
|
Total Phosphorus
|
--
|
--
|
--
|
|
Upper Red Rock Lake
|
MT41A005_030
|
--
|
--
|
Sediment
|
--
|
|
1 Impairment causes identified in Montana’s 2020 Water Quality Integrated Report
|
Steps for Completing a TMDL Document
- A stakeholder group is formed to work with DEQ in an advisory capacity throughout this project (contact Christy Meredith if you would like to be added to our email distribution list for project updates)
- DEQ drafts the TMDL document
- Stakeholders review and comment on the draft document (see table below)
- DEQ works with stakeholders to address their comments in the document
- A public comment period is held to solicit public input on the draft document (a notice will be posted on the Project Outreach page)
- DEQ prepares responses to written public comments and makes final document edits
- DEQ submits the TMDL document to the U.S. EPA in Denver for approval
- Once EPA approval is received, DEQ publishes a final TMDL document and notifies stakeholders the document is available
- DEQ works with local stakeholders to implement the water quality improvement recommendations contained in the TMDL document
Draft TMDL Documents
There are no draft TMDL documents for review at this time. TMDL development work has not been scheduled for the remaining TMDLs shown in the table above.
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Document
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Contents
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Date Posted
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Submit Comments To:
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Project Contacts
Click on the Adobe Reader icon if you need to download the free Adobe Acrobat software to view the PDF documents on this page.
Page Created: 3/26/21
Last Updated: 11/4/21
Red Rock TMDL Development
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