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Frequency Analysis of Snow Course Data

Brockway, C.E. and Mayland, H.F. (1980) Frequency Analysis of Snow Course Data. In: ASCE Irrigation and Drainage Watershed Management Conference. USA-ID-Boise, 1980/07/21-23.


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The revised log-Pearson Type III frequency analysis was applied to data from 13 snow courses in five western states having a data base of 26 to 49 years. January through May monthly data for depth, water content and snow density were analyzed. The procedure provides good estimates of mid- and high-range depth and density values while overestimating near zero values on some courses. Generally for the 13 courses the over-estimation occurred whenever water content values were less than 2 to 3 inches. This is the minimum depth often considered for snowmobiling and skiing activities. Other frequency techniques should be considered for courses where estimates of values less than 2 inches are required such as for runoff predictions.

Item Type: Conference or Workshop Item (Paper)
NWISRL Publication Number: 0437
Subjects: Research methodology
Mass Import - autoclassified (may be erroneous)
Depositing User: Dan Stieneke
Date Deposited: 20 Nov 2010 21:57
Last Modified: 31 Jan 2017 20:39
Item ID: 1016

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