Vallecito Creek Drainage Area 1

Vallecito Creek Drainage Drainage Area - 96 sq. miles (61,440 acres) Length of Tributary Streams miles Residential Area - 2 sq. miles (1,280 acres) Residential Area 20 miles or 3.6 hrs at 8’per second 2 Private Land Area North of Reservoir 1404 acres 919 Lots & Parcels of Land 491 Homes on Private Lands – Residential Area 326 Homes in Flood Plain 593 Lots in Flood Plain 705 Acres in Flood Plain (453ac in 100yr) (252ac in 500yr)

Facts Stream Flows 100 year storm Vallecito = 9200 cu ft per second Grimes Creek = 750 cu ft per second Berri Creek = 138 cu ft per second Total 10,088 cu ft per second 2006 Oct Flood = 4,000 cu ft per second The stream gradient may be 100 to 300 vertical feet per mile on upper lengths of the creek ( Campground North ) From the lake to the campground the Vallecito Creek gradient is about 72 vertical feet per mile or 241 ft lower in elevation at the lake entry compared to the creek at the campground 7909’ 7668’ 241 3

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5 2008

June 2005 October 2006 Vallecito Creek 6

June 2005 October 2006 Vallecito Creek 7

June 2005 October 2006 Vallecito Creek 8

June 2005 October 2006 Vallecito Creek 9

2003 Aerial 2007 Aerial Vallecito Creek 10

Vallecito Creek 2003 Aerial 2007 Aerial 11