Monday, July 18, 2011

Granby inflow beats all-time record

If you're into runoff-related recordkeeping, here's another one for the books. As of yesterday the total virgin inflow to Lake Granby was 379,000 acre feet. We expect that by the end of the month that number will top 400,000 acre feet.

The previous record was in 1984, with 355,000 acre feet coming in between April 1 and July 31.

Inflows to Willow Creek Reservoir are still running above average for this time of year, although we are noticing that the diurnal (daily) fluctuations are nearly gone. This is a sign that melting snow is no longer dominating the streamflow hydrology.