Pacific service magazine . t the time thisarticle is written, the Sacramento steamplant has generated over 24,000,000 kilo-watt hours. If space permitted, we wouldfind in this strenuous building period afund of experiences and instances of loyaldevotion to a cause, extending from themanagement officers down through the en-gineering corps to the laborer in the of these experiences would furnishstories in themselves. There are four subdivisions or sourcesof power supply, namely, water storage,steam power, purchased power, and streamflow. For the purpose of clarity we willconsider eac


Pacific service magazine . t the time thisarticle is written, the Sacramento steamplant has generated over 24,000,000 kilo-watt hours. If space permitted, we wouldfind in this strenuous building period afund of experiences and instances of loyaldevotion to a cause, extending from themanagement officers down through the en-gineering corps to the laborer in the of these experiences would furnishstories in themselves. There are four subdivisions or sourcesof power supply, namely, water storage,steam power, purchased power, and streamflow. For the purpose of clarity we willconsider each of these subdivisions in theorder named. During the late winter months a veryintensive snow survey was carried out witha view to ascertaining the water content of 1201151101051009590 (/> 85 ec E 80I 75S 70o 65i 60 ^ 55 o M 50 z o 45 J 40 ^ 35 30 25 20 15 10 NOTE THE MINIMUM PRECIPITATION AND SNOWFALL .FOR THE PERIOD 1913-1923 INCLUSIVEOCCURRED DURING THE SEASON 1919-1920 .POINTS ON CURVES EQUAL KILOWATT HOURSPER MONTH. 120 115 110 105 100 95 90 85 80 75 70 65 60 55 SO 45 40 35 30 25 20 15 10 JAN. FEB. MAR. APR. MAY JUNE JULY AUG. SEPT. OCT. NOV. DEC. Fig. 2. Estimated and actual stream flow for year 1924 compared with actual flowfor 1920 and estimated flow for a normal year Pacific Service Magazine 39 the snow pack, thereby enabling us to esti-mate the storage we might reasonably ex-pect to result from the snow cover. Such asnow survey consists of a series of carefulmeasurements of the depth and density ofthe snow at varying elevations taken bymeans of special apparatus over a definitestaked course and taken by the intrepidlake tenders who guard our reservoirslocated in the high Sierras during the longwinter months. These snow records were carefully com-piled, and as the winter months advancedthe survey became more valuable and weAvere able to estimate to a fair degree ofaccuracy the spring run-off in the variouswatersheds upon which our several develop-ments are located.


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