Rocks underlying the site consist of various sedimentary types that range in age from Pennsylvanian to Recent. These units contain formations such as; the Lower Morrison, Sundance, Lykins, Dakota and Upper Lyons. Individual beds in these formations at the site strike 15-20 degrees northwest and dip 27 to 38 degrees northeast. On the greater part of the dam site overburden is thin and ranges from zero to five feet. In a zone about 400 feet wide near the center of the site and at right angles to the axis, the overburden varies from 15 to 32 feet in thickness. This material is reddish silty sandy clay having the appearance of windblown material. It stands up well in test pits, some of which were dug to 20 feet or more without cribbing. It contains practically no boulders.
General
Project
Colorado-Big Thompson
Longitude
-105.1683
Watercourse
Offstream Storage
Reservoir
Horsetooth
Original Construction
1946-1949
National ID Number
CO01659
Latitude
40.6000
Dimensions
Structural Height
155.0 ft
Crest Length
1840.0 ft
Top of Active Conservation Pool (Elevation)
5430.0 ft
Top of Inactive Conservation Pool (Elevation)
5325.0 ft
Top of Dead Storage Pool (Elevation)
5270.0 ft
Crest Elevation
5443.0 ft
Hydraulics & Hydrology
Normal Water Surface Elevation
5430.0 ft
Spillway Capacity at Elevation
0 cfs at 0 ft
Outlet Works Capacity at Elevation
2500 cfs at 5430.0 ft
Drainage Area
17.0 sq mi
Hydrometeorological Report (HMR)
HMR 55
Auxiliary Spillway
No
Contact
Owner
Title: Area Office Manager Organization: Eastern Colorado Area Office Address: 11056 W. County Rd 18E City: Loveland, CO 80537-9711 Fax: 970-663-3212 Phone: 970-667-4410
Operator
Organization: Northern Colorado Water Conservancy District Address: PO Box 679 City: Loveland, CO 80539 Phone: 970-667-2437
More Information about the U.S. Bureau of Reclamation