Where do the Eldorado Spring gage volumes come from?
Eldorado gage volumes were developed using recorded flow rate data. For each year of gage record, the study used the day with highest peak flow and calculated a 24-hour volume for that day. The average daily flow rate for these days was then used to calculate corresponding flow volumes used to determine peak flows in the flood frequency analysis. The flood frequency analysis used a standard statistics package developed by the U.S. Army Corps of Engineers (Flood Frequency Analysis package) that applies the log Pearson Type III distribution together with a station skew. This analysis determines benchmark volumes corresponding to flows with specific return periods (i.e. 10-, 25-, 50-, 100-, and 500-years).
