City Of Greeley

Water Resources Projects & Planning

The Water Resources Division is responsible for long range planning to make sure that the City will have adequate water supplies to accommodate future growth in both wet and extended dry years.

Water Resource Division staff must look forward 20 to 50 years into the future to see if the City has, or can obtain, adequate water supplies to meet this standard in the future. As growth increases region-wide, water supplies available for purchase by the City or its developers become increasingly scarce. The Water Resource Staff is looking at many options that will provide an adequate water supply for future generations.

Water Master Plan
Halligan-Seaman Water Management Project
Milton Seaman Dam Enlargement Study

Windy Gap Firming Project
Non-Potable Master Plan

Conservation Plan

Water Master Plan

For the last century, Greeley has enjoyed a safe, good quality, plentiful water supply. As the 21st century begins, the City's water system faces challenges involving infrastructure age, population and economic growth, new regulations, and increasingly limited opportunities for new water supplies.

The City's Water Master Plan defines specific steps to provide a reliable water supply for Greeley to the year 2020. More general plans are proposed through 2050. Many components of Greeley’s water system have been in use between 50 and 75 years and are near the end of their useful lives. In the last 50 years, Greeley’s water demand has increased almost fivefold, a sustained growth rate of 2.9 percent for over half a century.

In that same time, population has tripled. In the next 50 years, demographers expect population to triple again with a corresponding increase in water demands.

As growth continues, raw water options become increasingly scarce and the ability to construct new transmission lines becomes more difficult. At the same time, proposed regulations regarding contaminants will require upgrades of Greeley’s existing water treatment plants.

Water Master Plan (pdf)
Map 1: Greeley Water Resources
Map 2: Non-Potable Distribution System
Map 3: Northern Colorado Political and Service Boundaries
Map 4: Existing and Future Land Use
Map 5: Future Supply Options
Map 6: Regional Capital Improvement Projects 2003-2012
Map 7: City of Greeley Capital Improvement Projects 2003-2012

Water Master Plan Annual Review

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Milton Seaman Dam Enlargement Study

The City of Greeley commissioned a study to evaluate the feasibility of providing additional water storage at the Milton Seaman Reservoir site. Milton Seaman Reservoir is a key component of the City of Greeley’s water supply system. Enlarging Seaman Reservoir is consistent with the City’s goal of making effective use of existing facilities to satisfy the increasing water demands created by the City’s growth. Milton Seaman Reservoir is located on the North Fork of the Poudre River approximately 1.3 miles upstream from its confluence with the main stem of the Cache la Poudre River, in Larimer County and has a current storage capacity of 5,000 acre-feet.

Final Seaman Dam Enlargement Study (pdf)
Maps and Figures (zip)

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Non-Potable Master Plan

There are two general categories of water supplies, treatable and untreatable. There are also two kinds of water demands, potable and non-potable. Treatable supplies are those available for treatment at Greeley’s filter plants, Bellvue and Boyd, and untreatable supplies are those not available for treatment for potable water service. Potable water demands are those that can only be met by treated supplies and non-potable demands are those that can be met by untreated supplies.

Most discussions about “non-potable are in reference to using untreated water for turf irrigation. This master plan addresses non-potable irrigation but is much broader in scope. It also addresses untreated water supplies and demands that are tied to water rights administration by the Water Department. It is impossible to adequately address all planning issues associated with non-potable irrigation without looking closely at supply and demand issues of water rights administration, and vice versa.

Non-Potable Master Plan (pdf)

Map 1: Non-Potable Distribution System
Map 2: Greeley-Loveland Return Flow Obligations
Map 3: Dirt Pits Vicinity Map
Map 4: Parcels with Non-Potable Irrigation by Water Source
Map 5: Parcels with Non-Potable Irrigation by System Ownership

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