GENESEE DAM & RESERVOIR PROJECT IS
COMPLETE!
 
Genesee's New Water Storage Reservoir:
Genesee's 101 acre foot dam and reservoir construction is complete.
Final grading and re-vegetation of the dam's downstream face is
currently in progress.
The reservoir is full and successfully operating
with operational flexibility and water quality benefits exceeding
original expectations. Even though the reservoir was constructed
primarily for drought protection, its benefits will go far beyond
its original intent.
The District plans to have a tour of the reservoir
and an Open House at its Water Treatment Plant in the spring or
summer of 2009.
Selected Site:
The dam and reservoir is built on a small gulch tributary to Bear Creek half way between Idledale and
Kittredge near mile marker 12 on State Highway 74. It can only be viewed from a small section of eastbound
74. This site was selected because it is cost-effective, environmentally friendly and safe. The selected site requires no federal permits, minimizes long-term operational costs and does not put the District’s water rights at risk.
Dam Statistics:
Building a safe and secure dam was the number one concern of the District. Minimizing environmental impacts and preserving the natural beauty of the canyon followed
by safety were top priorities as well. The following summarizes key elements of the project:
| Closest Downstream
Town |
Idledale |
| Distance to
Downstream Town |
2.2 Miles |
| River
or Stream |
Unnamed Tributary
of Cold Springs Gulch |
| Dam Type |
Roller Compacted Concrete (RCC)
Gravity Dam |
| Dam Height |
111 Feet (RCC Structural
Height) |
| Hydraulic Height |
92 Feet (Bottom of Reservoir to
Dam Crest) |
| RCC
Dam Crest Length |
375 Feet |
| RCC
Dam Crest Width |
16 Feet |
| Reservoir Surface
Area |
2.8 Acres at the Service
Spillway Crest |
| Normal Storage
Capacity |
101.2 Acre-Feet at the Service
Spillway Crest |
| Maximum Storage
Capacity |
127.4 Acre-Feet at the Top of
the Parapet Wall |
| Drainage Basin Area |
0.58 Square Miles |
| Outlet Discharge
Capacity (At 6,788.25 Feet Elevation |
22 Cubic-Feet/Second (cfs) |
| Service Spillway
Capacity (At 6,793 Feet Elevation |
562 Cubic-Feet/Second (cfs) at
the Emergency Spillway Crest |
| Emergency Spillway
Capacity |
4,208 Cubic-Feet/Second (cfs)
at the Top of the Parapet Wall |
| Combined Emergency
and Service Spillway Capacity |
5,027 Cubic-Feet/Second (cfs)
at the Top of the Parapet Wall |
| Emergency Spillway
Crest |
6,793 Feet Elevation |
| Emergency Spillway
Length |
200 Feet |
| Top of Parapet Wall |
6,797 Feet Elevation |
| Parapet Wall Length |
175 Feet |
FACTS:
- 58,300 cubic-yards of soil
will be used to construct the downstream berm against the
downstream face of the RCC dam.
|
- The downstream berm will be
seeded with native grasses and vegetation resulting in a
natural appearance that will blend with the surrounding
terrain.
|
- 2,900 cubic-yards of
conventional concrete were placed for the upstream dam face,
the spillway tower, and the spillway outlet structure.
|
- 34,300 cubic-yards of
roller compacted concrete were used to construct the dam's
gravity section.
|
- 33,100 cubic-yards of
native rock and gravel were used in the construction of the
dam. This negated the need to haul in large volumes of
material minimizing environmental impacts and traffic
disruptions.
|
- A grout curtain extends a
minimum of 50 feet below the dam's foundation to minimize
foundation seepage.
|
Engineering Documents - Cover Sheet
Engineering Documents - Drawing Index and Reservoir Capacity Curve
Engineering Documents - Plan of Modifications
Engineering Documents - Service Spillway Plan and Profile
Genesee Water & Sanitation District | 17301 W. Colfax Ave. Ste. 220 | Golden, CO 80401
303-278-9780 | Fax: 303-278-9873 | email: Info@GeneseeWater.com
|
