Olympus Dam

Overview
The concrete gravity section foundation consists of  pre-cambrian age rocks including granite, schist, and gneiss. This  foundation is commonly jointed as a result of compressional folding  and reverse faulting. The embankment foundation consists of sand,  gravel, and cobbles up to 15 feet deep lying over decomposed, fractured, and broken granite.

General
RegionFacilities in Great Plains | Great Plains Home Page
StateColorado
CountyLarimer
ProjectColorado-Big Thompson
Dam Type
ReservoirLake Estes
WatercourseBig Thompson River
Location
Longitude-105.4883
Latitude40.3750
Net Generation
Original Construction1947-1949
Modified Construction
National ID NumberCO01662
Hydrologic Unit Code

Dimensions
Structural Height70 ft
Hydraulic Height (Normal Operating Depth at Dam)45 ft
Top Parapet (Elevation)
Spillway Crest Elevation
Crest Elevation7481.0 ft
Crest Length320 ft
Crest Width10 ft
Base Width49.5 ft
Volume of Dam Construction Materials21000 cu yd
Streambed at Dam Axis
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)
Top of Inactive Conservation Pool (Elevation)
Top of Dead Storage Pool (Elevation)

Hydraulics & Hydrology
Volume79000 acre-ft
Total Water Storage at Elevation3068 acre-ft at 7475
Maximum Water Surface Elevation7487.0 ft
Normal Water Surface Elevation
Spillway Type
Auxiliary Spillway
Spillway Capacity at Elevation21200 cfs at 7475
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation2500 cfs at 60 ft
Diversion Capacity at Elevation
Drainage Area158 sq mi
Hydrometeorological Report (HMR)
Probable Maximum Flood (PMF) Report

Contact Information
Owner
TitleArea Office Manager
OrganizationEastern Colorado Area Office
Address11056 W. County Rd 18E
CityLoveland, CO 80537-9711
Phone (Fax)970 663-3212
Phone (Office)970 667-4410
Operator
TitleArea Office Manager
OrganizationEastern Colorado Area Office
Address11056 W. County Rd 18E
CityLoveland, CO 80537-9711
Phone (Fax)970 663-3212
Phone (Office)970 667-4410


Last updated: Apr 02, 2013