Dossier #28135
ROCK ISLAND
🇺🇸United States · COLUMBIA RIVER River · near VANTAGE, WA
Built 1932 · Dam · data quality: Fair
HydroelectricityFlood control
Reservoir outline · simplified
Specifications
- Height
- 22 m
- Crest length
- 947 m
- Reservoir capacity
- 161.6 MCM
- Reservoir area
- 7.7 km²
- Average depth
- 21 m
- Catchment
- 232,729 km²
- Avg discharge
- 3,480,467 L/s
- Elevation
- 181 masl
- Degree of regulation
- 0.1 %
Notes
Built 1932
Provenance
Record 28135 of the Global Dam Watch v1.0 database (CC BY 4.0), original source: GOODD-NID, year via NID. Coordinates are river-snapped: 47.3445, -120.0933.