R24AC00527
Cooperative Agreement
Overview
Grant Description
Built in 1909, Laprele Dam is a slab and buttress-type dam that was constructed by the Ambursen Hydraulic Construction Company in Converse County, Wyoming on Laprele Creek.
The dam is located about 11 miles west of Douglas, Wyoming.
It was constructed to store up to 20,000 acre-feet of spring snowmelt freshet flows for downstream irrigation during the summer.
The existing dam has deteriorated considerably since construction and was deemed unsafe for full storage by the Wyoming Water Development Office following recent extensive structural inspection and foundation evaluation, resulting in a maximum pool elevation restriction.
Multiple alternatives for rehabilitating or replacing the existing dam have been considered and evaluated at a preliminary level.
The preferred alternative, now advanced to 30 percent design, was replacement of the existing dam with a new roller-compacted concrete (RCC) dam with its central axis about 300 feet downstream from the existing dam crest.
The objective of this agreement is to perform engineering and construction activities to build a new dam that will be founded on bedrock and raised to the same maximum normal operating elevation as the existing dam.
WDC anticipates a 4-year construction schedule from March 2025 to December 2029.
The dam is located about 11 miles west of Douglas, Wyoming.
It was constructed to store up to 20,000 acre-feet of spring snowmelt freshet flows for downstream irrigation during the summer.
The existing dam has deteriorated considerably since construction and was deemed unsafe for full storage by the Wyoming Water Development Office following recent extensive structural inspection and foundation evaluation, resulting in a maximum pool elevation restriction.
Multiple alternatives for rehabilitating or replacing the existing dam have been considered and evaluated at a preliminary level.
The preferred alternative, now advanced to 30 percent design, was replacement of the existing dam with a new roller-compacted concrete (RCC) dam with its central axis about 300 feet downstream from the existing dam crest.
The objective of this agreement is to perform engineering and construction activities to build a new dam that will be founded on bedrock and raised to the same maximum normal operating elevation as the existing dam.
WDC anticipates a 4-year construction schedule from March 2025 to December 2029.
Awardee
Grant Program (CFDA)
Awarding / Funding Agency
Place of Performance
Converse,
Wyoming
United States
Geographic Scope
County-Wide
Related Opportunity
R-R-MB-23-003
Analysis Notes
Amendment Since initial award the total obligations have increased 172% from $36,680,000 to $99,680,000.
Water Development Commission was awarded
Laprele Dam Replacement Project: Enhancing Water Storage Capacity in Wyoming
Cooperative Agreement R24AC00527
worth $81,791,900
from USBR Missouri Basin and Arkansas-Rio Grande-Texas Gulf Regions in September 2024 with work to be completed primarily in Wyoming United States.
The grant
has a duration of 5 years 3 months and
was awarded through assistance program 15.077 Rehabilitation, Reconstruction, or Replacement of Carey Act Dams.
$17,888,100 (18.0%) of this Cooperative Agreement was funded by non-federal sources.
Status
(Ongoing)
Last Modified 3/18/25
Period of Performance
9/16/24
Start Date
12/31/29
End Date
Funding Split
$81.8M
Federal Obligation
$17.9M
Non-Federal Obligation
$99.7M
Total Obligated
Activity Timeline
Transaction History
Modifications to R24AC00527
Additional Detail
Award ID FAIN
R24AC00527
SAI Number
None
Award ID URI
None
Awardee Classifications
Special District Government
Awarding Office
140R60 GREAT PLAINS REGIONAL OFFICE
Funding Office
140R60 GREAT PLAINS REGIONAL OFFICE
Awardee UEI
PCWJRENNUUL5
Awardee CAGE
6MM09
Performance District
WY-00
Senators
John Barrasso
Cynthia Lummis
Cynthia Lummis
Modified: 3/18/25