Benton County Stormwater Documents

Check out our interactive GIS resources!

Stormwater Education App

Public Stormwater App

Materials for Erosion and Sediment Control (ESC)
and Stormwater Management Permit Applicants

DOCUMENT ESC Application Info and Permit Requirements
DOCUMENT ESC Permitting Flowcharts
DOCUMENT List of Approved Erosion and Sediment Control Lead Certifications
DOCUMENT ESC & SWM Permit Materials Checklist
DOCUMENT ESC Site Plan Checklist
DOCUMENT ESC Disturbed Area Worksheet
DOCUMENT ESC & SWM Impervious Area Worksheet
DOCUMENT Example ESC Site Plan
DOCUMENT ESC Permit Conditions
DOCUMENT Example SWPPP-EPA

Our Stormwater Permits and Reports

DOCUMENT Benton County MS4 Phase II Permi t (2019-2023)
DOCUMENT MS4 General Permit Issuance Letter
DOCUMENT Oregon DEQ Permit Renewal Application Package and Requirements
DOCUMENT 2023 Annual Report
DOCUMENT 2022 Annual Report
DOCUMENT 2021 Annual Report

Best Management Practices, Erosion & Sediment Control Manual, Stormwater Management Plan

DOCUMENT Benton County Stormwater Management Plan (2022)
DOCUMENT Benton County Best Management Practices (2022)
DOCUMENT Erosion & Sediment Control Standards and Details (ODOT)
DOCUMENT Erosion and Sediment Control Manual (ODOT)
DOCUMENT Benton County Stormwater Design Manual

Learning Resources on Stormwater Quality

FLYER Clean Water is Happy Water!
FLYER Are You Prepared for Stormwater?
FLYER Stormwater Fall and Winter Tips
BROCHURE Concrete Washout
ARTICLE Point and Non-Point Source Water Pollution
ARTICLE Watersheds
ARTICLE Pollutants
ARTICLE Silt Fences
ARTICLE Storm Drains
ARTICLE Trash and Litter
ARTICLE Bioswales
ARTICLE Low Impact Development & Green Infrastructure
ARTICLE 6PPD-Q

Stormwater GIS (Geographic Information System) Resources

MAP Stormwater Boundary Map
INTERACTIVE APP Stormwater Education App
INTERACTIVE APP Public Stormwater App
MAP Benton County Outfalls