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Boulder Elkhorn Documents

This version was saved 11 years, 8 months ago View current version     Page history
Saved by Christina Staten
on July 10, 2012 at 10:59:31 am
 

Posted App D of the nuts, sed, & temp document

Boulder-Elkhorn TMDL Planning Area home

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Boulder-Elkhorn TMDL Planning Area Documents 

 


Draft TMDL Documents

A draft version of the metals TMDL document is available for stakeholder review. If you would like to send comments on the document, please email them to Tim Byron or mail to:

 

Dept. of Environmental Quality

PPA/WQPB

Attn: Tim Byron

P.O. Box 200901

Helena, MT 59620-0901

 

The nutrient, sediment, and temperature TMDLs will be contained in a separate document and are anticipated to be complete by the end of July.

 

DOCUMENT

SIZE

DATE POSTED

Metals TMDL Document     

Boulder-Elkhorn Metals TMDLs and Framework Water Quality Improvement Plan – Stakeholder Review Draft

2.01 MB

6/14/12

 Appendix A: Watershed Description Maps

1.56 MB

6/14/12

Appendix B: Table of 2012 Impaired Waterbodies, Impaired Uses, & Impairment Status

0.1 MB

6/14/12

Appendix C: Regulatory Framework & Reference Condition Approach

0.17 MB

6/14/12

Appendix D: Surface Water & Sediment Chemistry Data

0.46 MB

6/14/12 

Appendix E: Water Chemistry for Natural Background Sites

0.1 MB

6/14/12

Appendix F: Target Departure Analysis

1.74 MB

6/14/12

Nutrients, Sediment, & Temperature TMDL Document 

Boulder-Elkhorn Nutrients, Sediment, & Temperature Draft TMDL Document and Appendices

--

Anticipated to be available second half of 2012

Appendix D: Sediment Reference Conditions & Target Value Rationale 0.1 MB 7/10/12

 

Nutrients and Metals Water Quality Sampling Data

 

DEQ sampled for a suite of nutrients and metals parameters during high and low flows in 2009 and 2010 throughout the Boulder River watershed. Seventy-three sites were sampled in 2009. A portion of those sites were sampled in 2010, along with 14 new sites. Five sites were sampled in 2011 in order to collect additional data on three streams. The sampling and analysis plans posted below provide tables and maps of sampling locations and the parameters that were sampled at each site. Data from all three years is provided below in both PDF and MS Excel (spreadsheet) formats.

 

Nutrients & Metals Sampling Plans

2009 Sampling and Analysis Plan (0.6 MB)

Appendices A – C (1.91 MB): Chlorophyll-a Photo Packet, Analyte Checklist, and QA/QC Checklist

2010 Sampling and Analysis Plan (0.09 MB)

Nutrients & Metals Sample Results

Metals (water column) Sample Results

Metals (sediment) Sample Results

Nutrients & Chlorophyll-a Sample Results

 

Spreadsheet of all Metals & Nutrient Sample Results

If you would like a comprehensive spreadsheet containing all data attributes, please contact Christina Staten.

Montana’s Water Quality Standards

“Circular DEQ-7, Montana Numeric Water Quality Standards” contains numeric water quality standards for metals parameters and can be found on DEQ’s Water Quality Standards web page.

DEQ is currently developing numeric water quality criteria for nutrients. See DEQ’s Numeric Nutrient Criteria webpage for additional information and to view the draft Circular DEQ-12 containing proposed numeric values. The proposed values for wadeable streams in the Middle Rockies Level III ecoregion will be applied for the Boulder-Elkhorn nutrient TMDLs.

 

 

Sediment & Temperature Source Assessment Reports

REPORT

DESCRIPTION

Sediment and Habitat Conditions and Streambank Erosion Assessments (2.5 MB)

Instream fine sediment data was collected and streambank erosion assessments were performed during the summer of 2010 on 13 streams. This document summarizes the methods used and the data that was collected. A map of sampled sites is included.

Assessment of Sediment Contribution from Hillslope Erosion (Upland Modeling Report) (1.16 MB)

A simple model was used to provide an assessment of existing sediment loading from upland sources and an assessment of potential sediment loading through the application of best management practices.

Boulder River Temperature Assessment (1.32 MB)

Stream temperature, flow, and riparian shade data was collected on the Boulder River during the summer of 2010. This information was used in a QUAL2K model to assess the influence of riparian shading and streamflow on stream temperatures in the Boulder River. This report contains a map of sample locations, summarizes the collected data, and discusses the results of the assessment.


 

Click on the Adobe icon if you need to download the free Adobe Acrobat software to view these files. Please contact Christina Staten, if you have problems downloading these documents. 

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Page Released: August 27, 2009

Last Updated: July 10, 2012