Storm Water Management

Administrative Guidelines for Storm Water Management

  1. Appendix A - Gratiot County Application (PDF)
  2. Appendix B - Conceptual Review Checklist (PDF)
  3. Appendix C - Drainage Plan Checklist (PDF)
  4. Appendix D - Detention Pond Calculator (XLS)
  5. Appendix E - Chart for C Factors (PDF)
  6. Appendix F- Maintenance Agreement (DOC)
  1. Appendix G - Inspection Daily Report (PDF)
  2. Appendix H - Detention and Restriction, Final Inspection Report (PDF)
  3. Appendix I - Engineer Certificate of Outlet (PDF)
  4. Appendix J - Engineer Certificate of Construction (PDF)
  5. Gratiot County Drain Commissioner Rules and Guidelines (PDF)