2020 Colville River Delta Spring Breakup Monitoring and Hydrological Assessment
The 2020 monitoring and hydrological assessment is the 29th consecutive year of spring breakup investigations and the 34th year of historical breakup monitoring in the Colville River Delta. Water surface elevations were monitored throughout the delta at locations of hydrologic importance, including near infrastructure. Discharge was measured, and peak discharge was calculated at key locations. The entire breakup event was documented with visual observations and photography from a helicopter and from roadways. Following breakup, roads, pads, and drainage structures were assessed for erosion and damage.
In the Colville River Delta, the breakup and downstream movement of river ice typically occurs during a three-week period in May and June. The spring breakup event historically produces flooding resulting from the rapid rise and fall of stage often attributed to ice jam formations and releases. Annual study and reporting of spring breakup is required.
Data and Resources
2020 CRD Spring Breakup Monitoring and Hydrological Assessment_1.pdf (21.4 MB)
2020 Colville River Delta Spring Breakup Monitoring and Hydrological Assessment was updated about 1 month ago
Added contact CPAI Environmental Studies Coordinator
Added organization Michael Baker Coorporation
Added organization ConocoPhillips
Added attachment 2020 CRD Spring Breakup Monitoring and Hydrological Assessment_1.pdf
Added attachment map (48).geojson
Added attachment Capture.PNG
2020 Colville River Delta Spring Breakup Monitoring and Hydrological Assessment was created about 1 month ago