Located in Weld County, Colorado, Marshall #2 is a privately owned earth dam built in 1887 for irrigation purposes along the Little Thompson River.
Wind
Humidity
Standing at a height of 20 feet with a length of 900 feet, this historic structure has a storage capacity of 51 acre-feet and serves multiple functions including fire protection, stock watering, and small fish pond creation in addition to irrigation. Despite its age, Marshall #2 has a low hazard potential and has not been rated for its current condition.
While the dam has not been modified in recent years and lacks certain safety features like a spillway, it still plays a crucial role in water management in the area. The dam has a maximum discharge capacity of 315 cubic feet per second and is regulated by the Colorado Department of Water Resources. With a high risk assessment score of 2, there is a need for ongoing monitoring and potential risk management measures to ensure the safety and integrity of Marshall #2 for both agricultural and environmental purposes in the region.
Year Completed |
1887 |
Dam Length |
900 |
Dam Height |
14 |
River Or Stream |
LITTLE THOMPSON RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
5 |
Hydraulic Height |
18 |
Nid Storage |
51 |
Structural Height |
20 |
Hazard Potential |
Low |
Nid Height |
20 |
St. Vrain Creek At Mouth
|
137cfs |
Big Thompson River At Loveland
|
18cfs |
Big Thompson River At Mouth
|
61cfs |
St Vrain Cr Blw Boulder Cr At Hwy 119 Nr Longmont
|
123cfs |
St. Vrain Creek Below Longmont
|
-999999cfs |
Boulder Creek At Mouth
|
47cfs |
| Location | Reservations | Toilets |
|---|---|---|
Missile Site Park
|
||
St. Vrain State Park
|
||
Union Reservoir
|
||
Boyd Lake State Park
|