Storing water supplies for the future
Whether it be planning for retirement or saving for college, most long-term plans require a healthy savings account. Storing water for the future, for times of high usage and droughts is an essential piece in the overall water puzzle. This ensures the Town will have enough water on an annual basis to maintain the quality of life to which our residents are accustomed now and in the future.

As of 2015, Castle Rock Water has secured most of the storage needed for the future at an investment of approximately $46 million. That’s enough water to fill the Town’s Recreation Center pool 16,400 times, and includes storage the Town has acquired in the Rueter-Hess and Chatfield reservoirs.
Additional storage for the Town has been created by modifying two existing deep groundwater wells for use as underground reservoirs. When we have excess renewable water, it can be stored in these wells. During times of scarcity, this water can be pumped back out.

In total, that is enough storage to meet the water demands of approximately 100,000 people for half a year. In 2015, Castle Rock Water was excited to started filling Rueter-Hess Reservoir with renewable water.

While it will take many years to fill the available storage, this is progress towards a great insurance policy and makes huge strides towards securing the Town’s water future. In coming years, securing excess renewable water to fill all of our storage will be a priority.
Rueter-Hess Reservoir
Rueter-Hess Reservoir (near Parker) is an important part of the Town's long-term water strategy. Castle Rock Water is joined with several partners on this project including Parker Water and Sanitation District, Castle Pines North Metro District and the Stonegate Village Metropolitan District.

The reservoir eventually will hold 72,000 acre-feet of drinking water for Castle Rock, Parker, Castle Pines North and other local municipalities. The Town owns approximately 8,000 acre-feet of storage space in the reservoir.
More financial resources will be needed to purchase water to fill our space, and then to build the infrastructure to move the water from the reservoir to Castle Rock. We are working with adjacent communities to share in the costs of the infrastructure.  
Construction of the reservoir was completed in March 2012. For more information and photos of the reservoir, visit the 
Parker Water and Sanitation District website.

In August 2015, the South Metro WISE members received the 404 Permit Amendment from the Corps of Engineers to store WISE water in the reservoir. This permit allows the first drops of water intended for Castle Rock to be stored at the reservoir.

While the primary purpose of the reservoir is to store and provide safe, clean drinking water, the Rueter-Hess Reservoir Recreation Authority is also exploring options for possible recreational amenities. They're soliciting feedback to find out what activities interest residents. This entire process is expected to take six to eight months. Learn more about the project. 
Chatfield Reallocation Project
This project to reallocate the current flood control pool in Chatfield Reservoir to a joint flood control / conservation pool has made a lot of progress in the last year. In May 2014, the U.S. Army Corps of Engineers approved the final Environmental Impact Statement in a Record of Decision. Design and construction is anticipated to take two to three years with storage becoming available by 2018. In October 2014, the U.S. Army Corps of Engineers and Colorado Department of Natural Resources signed the Water Storage Agreement. 
Chatfield Reservoir
The total project cost is estimated to be $134 million. In June 2014, after a detailed evaluation, Castle Rock Water elected to participate in the Chatfield Reallocation Project at a 200 acre-foot subscription level for a total cost of $1.28 million. In 2015, Castle Rock signed an option agreement with the Colorado Water Conservation Board to purchase up to 1,300 acre-feet of storage space over the next 15 to 20 years. Learn more about the Chatfield Reallocation project.