Oroville Dam 2017.2.16 – The condition of the dams upstream

There are three major dams upstream from Oroville

Butt Lake

Buck Lake has a capacity of 49891 Acre Feet http://www.project2105.org/project_facts.php

Current volume is 46308 Acre Feet http://cdec.water.ca.gov/cgi-progs/queryDaily?BTV

6,000 Acre feet increase in last 10 days

Per day increase 600

Max capacity in approx 5 days

Almandor Lake

Almandor lake has a capacity of 1,142,964 Acre Feet http://www.project2105.org/project_facts.php

Current volume is 1106042  http://cdec.water.ca.gov/cgi-progs/selectQuery?station_id=ALM&sensor_num=15&dur_code=D&start_date=&end_date=now

80,000 acre feet increase in last 10 days

Per day increase 8000 acre feet

Max capacity in approx 5 days

Buck Lake

Acre feet capacity 105605 https://www.gpo.gov/fdsys/pkg/FR-2016-12-22/html/2016-30851.htm

Current volume 103227 http://cdec.water.ca.gov/cgi-progs/selectQuery?station_id=BCL&sensor_num=15&dur_code=D&start_date=&end_date=now

An increase of 8825 Acre feet in last 10 days

Per day increase 882 acre feet

Max capacity in 3 days

Oroville Upstream Lakes – Layman Analysis

Using the average lake volume increases over last 10 days, all three lakes will be full in 5 days

Rate of flow into these three lakes is 9482 acre feet per day

43559 cubic feet = 1 acre foot

Cubic feet per second increase into Oroville lake will be 4780 when these lakes are full

It seems, even if the upstream lakes do reach capacity, the effect on Oroville dam will be small

The watershed for Oroville lake is massively bigger than the other 3 lakes combined

Links

Gateway to lake data

http://cdec.water.ca.gov/staMeta.html

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