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<br />9/12/69
<br />
<br />COMPARISON OF AVERAGES FROM CRSP REPORT VS. TYPE I REPORT
<br />
<br />TYPE I STUDY II
<br />1965 Adj. to 1968
<br />Basis CRSP Report Y
<br />
<br />Bureau
<br />CRSP
<br />Report
<br />
<br />VIRGIN FLOWS - COLORADO RIVER AT LEE FERRY
<br />
<br />1906 - 1965
<br />1914 - 1945
<br />1906 - 1968
<br />1931 - 1964
<br />1953 - 1964
<br />1914 - 1965
<br />
<br />60-Year Average
<br />32-Year Average
<br />63-Year Average
<br />34-Year Average
<br />12-Year Average
<br />52-Year Average
<br />
<br />15,090
<br />-- -15-, 639
<br />14,955
<br />12,924
<br />11,588
<br />14,644
<br />
<br />HISTORICAL DEPLETIONS ABOVE LEE FERRY II
<br />1906 - 1965 60-Year Average
<br />1914 - 1945 32-Year Average
<br />1906 - 1968 63-Year Average
<br />1931 - 1964 34-Year Average
<br />1953 - 1964 12-Year Average
<br />1914 - 1965 52-Year Average
<br />
<br />15,738
<br />
<br />13,288
<br />12,135
<br />14,874!!/
<br />
<br />15,738
<br />
<br />13,288
<br />12,135
<br />14,8749
<br />
<br />2,105
<br />1,851 1,950 1,950
<br />2,208
<br />2,197 2,561 2,561
<br />2,844 3,391 3,391
<br />2,218 2,448 2,448
<br />
<br />HISTORICAL FLOWS - COLO. RIVER AT LEE FERRY II
<br />1906 - 1965 60-Year Average 12,985
<br />1914 - 1945 32-Year Average 13,788
<br />1906 - 1968 63-Year Average 12,747
<br />1931 - 1964 34-Year Average 10,727
<br />1953 - 1964 I2-Year Average 8,744
<br />1914 - 1965 52-Year Average 12,426
<br />
<br />1968 MODIFIED FLOWS - COLO. RIVER AT LEE FERRY
<br />1906 - 1965 60-Year Average 12,318
<br />1914 - 1945 32-Year Average 12,787
<br />1906 - 1968 63-Year Average 12,192
<br />1931 - 1964 34-Year Average 10,401
<br />19S3 - 1964 12-Year Average 9,250
<br />1914 - 1965 52-Year Average 11,923
<br />
<br />13,788
<br />
<br />10,727
<br />8,744
<br />12,426
<br />
<br />12,930
<br />
<br />10,480
<br />9,327
<br />12,066
<br />
<br />TOTAL PRESENT 1968 DEPLETIONS ABOVE LEE FERRY
<br />1906 - 1965 60-Year Average 2,772
<br />1914 - 1945 . 32-Year Average 2,852 2,808
<br />1906 - 1968 . 63-Year Average 2,763
<br />1931 - 1964 . 34-YearAverage 2,523 2,808
<br />1953 - 1964 . 12 -Year Average 2,338 2,808
<br />1914 - 1965 . . 52-Year Average 2,721 2,808
<br />.!I Reflect storage change and evaporation at CRSP reservoirs.
<br />Y Additional depletion 1965 to 1968114,000 A.F. adjusted for
<br />31,000 A.F. Navajo evaporation.
<br />Y Type I Studies do not recognize 115,000 A. F. of salvage
<br />included in CRSP estimates.
<br />
<br />~I Final Type I reports-used 14,872,000 A.F.
<br />
<br />13,788
<br />
<br />10,727
<br />8,744
<br />12,426
<br />
<br />12,847
<br />
<br />10,397
<br />9,244
<br />11,983
<br />
<br />2,891
<br />
<br />2,891
<br />2,891
<br />2 ,891
<br />
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