
Reports
Chatfield Watershed Authority is overseen by the Colorado Department of Public Health & Environment, and the Water Quality Control Commission as are many of the agencies making up the membership of the association. These state agencies provide the regulations, policies and water quality statutes. The Authority is required, by law, to conduct and provide various reports to ensure a consistent and appropriate public health service.The Authority is governed by Regulation No. 73 which outlines the purpose, scope and reporting required. Water quality standards and stream classifications are defined in Regulation No. 38.
Our Reports
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Chatfield Watershed Authority 2023 Annual Report
Chatfield Watershed Authority 2022 Annual Report
Chatfield Watershed Authority 2021 Annual Report
Chatfield Watershed Authority 2020 Annual Report
Chatfield Watershed Authority 2019 Annual Report
Chatfield Watershed Authority 2018 Annual Report
Chatfield Watershed Authority Presentation of the 2018 Annual Report
Chatfield Watershed Authority 2017 Annual Report
Chatfield Watershed Authority 2016 Annual Report
Chatfield Watershed Authority 2015 Annual Report
Chatfield Watershed Authority 2014 Annual Report
Chatfield Watershed Authority 2013 Annual Report
Chatfield Watershed Authority 2012 Annual Report
Chatfield Watershed Authority 2011 Annual Report
Chatfield Watershed Authority 2010 Annual Report
Chatfield Watershed Authority 2009 Annual Report
Chatfield Watershed Authority 2008 Annual Report
Chatfield Watershed Authority 2007 Annual Report
Chatfield Watershed Authority 2006 Annual Report
Chatfield Watershed Authority 2005 Annual Report
Chatfield Watershed Authority 2004 Annual Report
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The Authority sampling and analysis plan is approved by the Water Quality Control Division.
The monitoring plan titled 2003-2005 Chatfield Watershed Authority: Quality Assurance Project Plan (QAPP), Sampling and Analysis Plan (SAP) and Standard Operating Procedures (SOP) Version 2.0, January 1, 2003 describes the basic monitoring program for the Chatfield Watershed. The Authority is reviewing the QAPP for necessary updates and revisions.
QAPPMonitoring Program Update - Effective 2008Technical Paper #1 (pdf)
Technical Paper #2a - Chatfield Reservoir Chlorophyll Standard (pdf)
Technical Paper 2b - Chlorophyll Distribution (pdf)
Technical Paper 2c - Chlorophyll Averaging Period (pdf)
Session 3 - Creating a Concentration Translator to Link Chlorophyll & Nutrients (pdf)
Session 4 - Chatfield Reservoir Phosphorus Load Calculations (pdf)
Massey Draw Abstract (pdf)Chatfield Hydrologic Scenario (ppt)
DEC Chatfield Reservoir Phosphorus Budget (ppt)
DEC Chatfield Reservoir Water Budget (ppt)
Chatfield Reservoir Load Translator (ppt)
Estimating Allowable Phosphorus Load to Chatfield Reservoir (ppt)