Silver Spruce #2 is a privately owned earth dam located in Lyons, Colorado, along the South St.
Wind
Humidity
Vrain Creek. Built in 1958, this recreational dam stands at 18 feet high and has a storage capacity of 56 acre-feet, with a normal storage level of 33 acre-feet. The dam spans 293 feet in length and covers a surface area of 6 acres.
Despite its low hazard potential and satisfactory condition assessment, Silver Spruce #2 undergoes regular inspections every 6 years to ensure its safety and structural integrity. The dam features an uncontrolled spillway with a width of 22 feet and a maximum discharge capacity of 496 cubic feet per second. Although it meets guidelines for emergency action plans and inundation maps, its risk assessment is classified as moderate.
Water resource and climate enthusiasts will find Silver Spruce #2 an intriguing structure for recreational purposes, nestled in the picturesque Boulder County. Its historical significance, engineering design by John A. Lunsford, and state-regulated operation make it an essential part of the water management system in the region. With its location along a scenic waterway, the dam offers both practical functions and aesthetic appeal for visitors to enjoy.
Year Completed |
1958 |
Dam Length |
293 |
Dam Height |
18 |
River Or Stream |
SOUTH ST. VRAIN CREEK-TR |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
18 |
Nid Storage |
56 |
Structural Height |
18 |
Hazard Potential |
Low |
Nid Height |
18 |
South St. Vrain Creek Near Ward
|
3cfs |
Left Hand Creek Near Boulder
|
-999cfs |
Middle Boulder Creek At Nederland
|
7cfs |
Fourmile Creek At Orodell
|
2cfs |
Boulder Creek Near Orodell
|
-999cfs |
St. Vrain Creek At Lyons
|
27cfs |
| Location | Reservations | Toilets |
|---|---|---|
Glacier View Ranch
|
||
Peaceful Valley
|
||
Peaceful Valley Campground
|
||
Camp Dick Campground
|
||
Camp Dick
|
||
Allenspark Dispersed Camping
|