The 400 acre-foot James Tingle Dam and Reservoir project is located southwest of the town of Jefferson in Park County, Colorado near Michigan Creek.
Reflections on James Tingle Reservoir.
The dam site is at an elevation of approximately 9400 feet. Primary use of the reservoir is as a water storage vessel used to supply metered historic return flows to Michigan Creek. The reservoir utilized a balanced cut/fill of on-site materials and has both above and below grade storage.
Construction of James Tingle Dam and Reservoir.
Major project components include a 26-foot high zoned earth embankment with 200,000 cubic yards of earthwork, grouted riprap inlet channel, outlet channel, outlet works with concrete gate vault, concrete spillway, 80,000 square foot slurry wall, and metered return flow system.
Construction of outlet pipe and wet well.
Project challenges included construction in a remote, high mountain environment, design of return flow facilities capable of operation during the winter and project constraints due to the location of wetlands near the site.
Overview of dam and outlet works.
Deere & Ault Consultants, Inc. provided the full range of engineering services on this project:
- Feasibility study.
- Geotechnical investigations.
- Slope stability and seepage modeling.
- Hydrological investigations.
- General civil engineering.
- Design of the dam and reservoir.
- Preparation of plans and specifications (reviewed and approved by the SEO).
- Construction engineering.
- Post construction monitoring.
Clients: Center of Colorado Water Conservancy District and Centennial Water and Sanitation District