Boulder County Ditch Map
​Water Education Colorado
Left Hand Ditch History from Table Mountain Association
​The Ditch Project
​UC Boulder Historic Irrigation
​Boulder Ditch and Reservoir Map
Boulder River Levels

MOBILE ONLY: Ditch Project Map Links
MOBILE ONLY: 1907 Water Dev on Boulder Creek
​MOBILE ONLY: 1966 Platt Drainage Basin Map
​​MOBILE ONLY: 1985 Water Master Plan