Board Meeting 01/06/1983

• Board Meeting Date: 1/6/1983
• Description: CWCB Meeting - No mins.
• Board Meetings - Doc Type: Meeting

-- ~-

COLORADO WATER CONSERVATION BOARD
823 State Centennial Building
1313 Sh~rman Street
Denver, C~lorado 80203

January 6-7, 1983

Harper Lake' Reservoir
(City o~.Louisvil1el

Introduction

Harpe~ Lake Reservoir is l~cated on Davidson Mesa approxi-
mately one mile west of Louisville. This reservoir is decreed
for agricultural use in the am~unt 62 acre-feet. It would be
enlarged to 715 acre-feet and ~ou1d serve as a raw water storage
facility for the city of Louisville. The city has applied for a
change of use to municipal water on the 62 acre-feet (case
82CW376l. The city currently ~wns over 2,200 acre-feet of direct
flow rights, the point of dive~sion and the use of which would be
changed in order to utilize the expanded reservoir.

Problem

The City of Louisville has experienced more than a 200 per-
cent population increase durinq the last decade. Due to this the
city's winter water supply is being taxed to the limit. With
continued growth in the area, the town will need to expand its
raw water storage capacity. The proposed project would satisfy
that need to the year 2010.

Project Study

In January, 1981, the City of Louisville submitted an appli-
cation for State financial assistance. The Board later approved
funding for half of the cost of a feasibility study on the pro-
posed project. That study has now been completed by Rocky
Mountain Consultants, Inc., and is the basis of recommendations
on this project.

proposed Project

Five alternative projects were studied for the city. For
reasons of economics and ease of construction, the Harper Lake
Reservoir alternative was dete~mined to be the most feasible.
This project would increase the existing Harper Lake Reservoir
from a 62 to a 715 acre-foot capacity. The new reservoir would
have a_maximum depth of 23 feet, including 5 feet of freeboard,
and a surface area of 42 acres. A pumping station would be
installed to pump water from this reservoir to the Louisville
Ditch, which would transport water to the city's other raw water
reservoir.

600
Harper/Lake