Watershed Documents and Forms

Stormwater Management Manual documents 

The following documents are effective on January 1, 2023 and include minor revisions to the Stormwater Management Manual and related documents.

• Stormwater Management Manual
• Definitions (Appendix A)
• Residential Guidance (Appendix B)
• Erosion Control Manual (Appendix C)
• Sizing Methods (Appendix D)
• Infiltration Testing (Appendix E)
• Soil and Mulch Specs (Appendix F)
• Planting (Appendix G)
• Typical Details (Appendix H)

 Additional resources 

Gresham stormwater plant list

2022

• Surface Water and NonPoint Source TMDL program summary

2021

• Surface Water and NonPoint Source TMDL program summary

2020

• Surface Water and NonPoint Source TMDL program summary

2019

• Surface Water and NonPoint Source TMDL program summary

2018

• Surface Water and NonPoint Source TMDL program summary
  • Surface water
  • Groundwater 

• Gresham Revised Code
• Development Code for Stormwater 
• Gresham code review of habitat-friendly development practices
• Public Works Standards

National Pollutant Discharge Elimination System (NPDES) permit documents

• Gresham and Fairview NPDES stormwater discharge permit 
• Gresham stormwater management plan
• Gresham and Fairview environmental monitoring plan 
• Monitoring plan appendices

Total Maximum Daily Load (TMDL) plan and associated documents

• Gresham TMDL plan (2023-2028)
• NPDES Wastewater permit (2014)
• Wastewater Treatment Plant air quality permit
• Wastewater Treatment Plant 1200Z permit (2018)

Related links

• Transportation winter operations management plan
• Wastewater Mercury Minimization Plan
• Gresham Revised Code
• Gresham Community Development Code

Gresham Water Pollution Control Facility (WPCF) permit

Underground Injection Control (UIC) management plan 2012-2022

Stormwater monitoring plan plus appendix A and B and appendices C through F

Underground Injection Control (UIC) system-wide assessment 2012

Underground Injection Control (UIC) technical memoranda 2012

• Stormwater Master Plan 
• Appendix A1: Kelly Creek (Modeled capacity deficiencies) 
• Appendix A2: West Gresham 
• Appendix A3: Johnson Creek 
• Appendix B: Hydrologic inputs and results tables  
• Appendix C: Hydraulic results tables
• Appendix D: List of medium and low priority capacity deficiencies 
• Appendix E: CIP fact sheets / existing city 
• Appendix E: Springwater  
• Appendix E: Pleasant Valley
• Appendix F: Unit cost tables  

Review all of our Water Services Master Plans. 

Capital Improvement Program