There is quite a bit of technical information about the Summit Valley and Van Norden lake that is publically available. Listed here are links to some of that information that is relevant to our preservation goal. Check back
- Vital Statistics
- Summit Valley – GPS Coordinates:39 18’50.89″N 120 21’46.90″W Altitude: 6770 ft Area: 1300 acres
- Lake Van Norden – Area: 87 acres Max depth: 8 ft Avg depth: 2 ft Max volume: 190 acre-ft
- Donner Summit Average Annual Snow fall – 34 ft
- Total watershed of draining into Van Norden Lake – 10,000 acres
- Geologic information
- Geologic history of the Summit Valley by John Cobourn
- Russel Towles articles: Geology of the Sierras; Geology of the North Fork
- Information on the dam and lake
- Hydraulic Evaluation of Van Norden Dam – study done by Balance Hydrologics in 2013. The report is the basis for the Forest Service claim that the dam is a safety concern.
- Bathymetry – studies done by Balance Hydrologics in 2013 determined the depth and volume of the lake.
- Summit Valley Hydrogeomorphic (HGM) types from Balance Hydrologics
- DSOD record (warning large file)
- Environmental & Conservation information
- Summit Valley habitat map
- Summit Valley habitat change scenario maps
- Sierra Watch Conservation Blueprint for Donner Summit
- Royal Gorge Biological Resource Assessment prepared by North Fork Associates (now Dudek)
- Truckee Donner Land Trust Van Norden Meadow Presentation
- Save Lake Van Norden Presentations
- Summit Valley and Van Norden Lake (Vimeo video)
- Van Norden Lake Two Lake Solution (Youtube video)
