CEOS - Dewatering General Permit Program

Permit Applications and Technical Resources 
The Water Quality Control Division processes all dewatering-program permit actions through the Colorado Environmental Online Services (CEOS) portal. Use this page to access CEOS and to find guidance and technical resources for completing and submitting permit applications.  

Welcome to CEOS:
CEOS Login   
  • Submit applications, modifications, withdrawals, change of contact, transfer of ownership, and permit terminations requests.
  • Monitor submittal progress.
  • Receive notifications and alerts.
CEOS Guidance and Assistance:

CEOS Phone: 303-691-7919
Permits Phone: 303-692-3517
Office Hour - 1 p.m. - 2 p.m. Wednesday Nov. 20, 2019
Dewatering Permit Overview and Application Guidance:
Required Application Supplemental Forms:
Technical Resources:

Determining Low Flow:
Maps, Tools, and Searchable Databases:
Additional Resources: