vallecito creek drainage area 1. vallecito creek drainage drainage area - 96 sq. miles (61,440...
TRANSCRIPT
Vallecito Creek Drainage Area
1
Vallecito Creek Drainage
Drainage Area - 96 sq. miles (61,440 acres)
Length of Tributary Streams - 264 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
4
5
2008
2008
June 2005
October 2006Vallecito Creek
6
June 2005
October 2006Vallecito Creek
7
June 2005
October 2006Vallecito Creek
8
June 2005
October 2006Vallecito Creek
9
2003 Aerial
2007 AerialVallecito Creek
10
Vallecito Creek2003 Aerial
2007 Aerial
11