Watershed Rules

CRWD Rules
updated May 2015

In 2003 CRWD assumed an advisory role to its cities on development and redevelopment proposals: District staff would review development proposals and make recommendations consistent with the guidelines for water quality, volume control, flooding, rate control, wetland protection, and erosion control in CRWD’s Development Review Criteria. In two years, the District reviewed 71 developments, tracked criteria implementation, and found marginal compliance.

With water quality goals not being advanced, in 2005 CRWD completed a study to assess the pollution impacts of non-compliance with the Development Review Criteria and then set a goal to develop and adopt science-based watershed rules to improve water quality.

Rule Adoption

Water quality and stormwater management rules (Rules) were adopted by CRWD Board of Managers in September 2006, and subsequently a Permitting Program was created as a vehicle for the Rules’ implementation. The Rules require stormwater management permits for construction projects disturbing more than one acre of land. Most of CRWD is fully developed, making it necessary to utilize stormwater improvement technologies as part of redevelopment projects to reduce stormwater pollution to CRWD’s lakes and wetlands and the Mississippi River. In order to achieve CRWD’s goal of cleaner water resources, the Rules require volume reduction practices that capture 1.1 of rainfall over all newly constructed impervious surfaces. This is most often achieved by infiltration of runoff into the soil.

CRWD Permits are required for projects under the following rules:

  • Rule C. Stormwater Management
  • Rule D. Flood Control
  • Rule E. Wetland Management: Follow this link for detailed informaiton on the MN Wetland Conservation Act (WCA)
  • Rule F. Erosion and Sediment Control
    Rule G. Illicit Discharge and Connection

Please review a full copy of CRWD Rules to learn about all criteria and requirements for a permit.

Also see the Volume Reduction for Stormwater Management FAQ Sheet or Permit Guidance and Information Handbook.

Stormwater Reuse Calculator

Statement of Need and Reasonableness (SONAR)

As part of promulgating the Rules pursuant to State statutes, a statement of need and reasonableness for CRWD Rules was prepared to justify the need for the Rules. The SONAR contained two sections: 1) description of the need for CRWD Rules; and 2) description of why CRWD believes that the Rules are reasonable.

CRWD, partnering with Ramsey-Washington Metro Watershed District, completed the Rulemaking Study to evaluate how stormwater BMPs should be incorporated into densely developed sites, develop the technical standards/criteria for the Rules, and evaluate how the technical standards apply to the same sites evaluated previously. This study illustrated that the technical criteria for the Rules were practical and feasible from an engineering perspective and the costs were reasonable in consideration of the total project cost. Read the full document.






(SONAR) Appendices

Appendix A, Establishment Order
Appendix B, Section IV-7 of Watershed Management Plan
Appendix C, MOUs
Appendix D, Development Review Criteria
Appendix E, Development Review Compliance Tables
Appendix F, Development Impact Analysis
Appendix G, Rulemaking Workplan and Timeline
Appendix H, Rulemaking Study, Phase I
Appendix I, Technical Standards for Rules
Appendix J, Rulemaking Study, Phase II
Appendix K, Draft Rules 10_05_05
Appendix L, Oct-Dec 2005 Comments
Appendix M, TAC Workplan Schedule
Appendix N, TAC Recommendations and Documents
Appendix O, District Response to TAC Recommendations

Board Resolutions
The Board of Managers has adopted resolutions to establish the rules and the associated fees. Click here to view the 2008 resolutions.