UC Today is the quarterly newsletter of the Bureau of Reclamation’s Interior Region 7 – Upper Colorado Basin covering the states of Colorado, New Mexico, Utah and Wyoming. We look forward to sharing with you some of the projects and activities that we have been working on to manage, develop and protect water and related resources in an environmentally and economically sound manner in the interest of the American public.

from the
Western Colorado Area Office

A Reclamation contractor in a yellow vest sets up a diamond saw at the Durango Pumping Plant intake structure to cut a section of the gray concrete so it can be removed.
A contractor sets up a diamond saw to cut a concrete section from the Durango Pumping Plant intake structure. Reclamation photo by Matt DeAmico

Western Colorado Area Office roundup

By Justyn Liff, Western Colorado Area Public Affairs

Environmental Assessments

The Western Colorado Area Office has released two draft environmental assessments for salinity control projects. The first is the Root and Ratliff Ditch Pipeline Project in Montezuma County, Colorado. The proposed project would replace 5.4 miles of the Root and Ratliff Ditch with buried pipe. The second, is for the Upper Stewart Ditch Pipeline Project in Delta County, Colorado. The proposed project would replace 2.6 miles of Stewart Ditch with buried pipe. When complete both projects will prevent water loss through seepage into the surrounding soil, and reduce salinity loading in the Colorado River Basin. Final environmental assessments will be released in late spring to early summer.

A diamond shaped piece of gray concrete is lifted by a cable from the intake structure.

The saw cut is complete, and the concrete is being removed. Reclamation photo by Matt DeAmico

Durango Pumping Plant Construction

Modifications began in January on the intake structure at the Durango Pumping Plant; the feature used to pump water from the Animas River to Lake Nighthorse, part of the Animas-La Plata Project located in Durango, Colorado. The modifications to the overflow crest gates, trashracks, and bulkheads will improve the operational capability of the intake structure. Before construction, high sediment loading created damage to equipment involved in conveying the water from the Animas River, reduced capacity in Lake Nighthorse Reservoir, and increased operation and maintenance costs. Work currently underway will solve those issues. Demolition of the existing intake structure is complete and concrete pouring for the new intake structure has begun. During the COVID-19 health crisis, crews are continuing to work and are taking precautions per local health department guidelines. Construction is scheduled for completion in February 2021.

Paradox Valley Unit Updates

The Paradox Valley Unit controls salinity in the Colorado River from sources in the Paradox Valley to decrease the adverse effects of high salt concentration in water delivered to users in the United States and Mexico. The PVU is located along the Dolores River in western Montrose County, Colorado, approximately 50 miles southwest of Grand Junction. The PVU extracts naturally occurring brine groundwater in the Paradox Valley, thereby preventing it from entering the Dolores River and, ultimately, the Colorado River. The saline concentration of this natural brine groundwater is 260,000 milligrams per liter which, prior to the construction of the PVU, added more than 205,000 tons of salt to the Dolores River annually. Without the PVU, salt load from the Dolores River would degrade the water quality of the main stem of the Colorado River. The PVU extracts naturally occurring brine ground water and injects it into a 16,000-foot-deep injection well, preventing the brine from entering the Dolores River, and ultimately the Colorado River.

A six-month test of reduced injection well operations at the Paradox Valley Unit began April 21. Operations at the unit were suspended on March 4, 2019, following a 4.5 magnitude earthquake located nearly a mile from the injection well.

After comprehensive analyses, Reclamation concluded that the earthquake was induced by PVU injection operations, which increased fluid, or pore pressure within the rock under the Paradox Valley. Recent modeling studies show that pore pressures within several miles of the PVU injection well have decreased since injection operations were suspended. These studies further indicate that pressures will remain relatively low during the planned 6-month reduced injection test. Seismic potential decreases with that lower pore pressure.

During the six-month test, which will be conducted at a 32% reduced injection rate, Reclamation will closely monitor the injection pressure and seismic response near the well. Any abnormal responses will result in a further shutdown for evaluation. Data collected during this test will inform decisions for future well operations.

The Paradox Valley Unit injects highly pressurized, concentrated saltwater (brine) into a 16,000-foot-deep well, preventing the brine from entering the Dolores River. The unit, located along the Dolores River in western Montrose County, Colorado, substantially benefits downstream water quality in the Colorado River Basin. Prior to the suspension of operations, the deep well injection program removed about 95,000 tons of salt annually from the Dolores and Colorado rivers.

The unit was constructed pursuant to the Colorado River Basin Salinity Control Act of 1974, as amended and supplemented (P.L. 93-320), which authorizes the construction, operation, and maintenance of works in the Colorado River Basin whose purpose is to control the salinity of water delivered to users in the United States and the Republic of Mexico.

Because the existing deep injection well is nearing the end of its serviceable life, Reclamation is investigating potential alternatives to protect and enhance the quality of water in the Colorado River. Reclamation is preparing an environmental impact statement to identify and evaluate these alternatives.

A draft environmental impact statement evaluating a no action alternative and three action alternatives, which are a new deep injection well, solar evaporation ponds, and zero liquid discharge technology was released in December 2019. The final EIS and record of decision are scheduled to be released in Summer 2020.

In March 2019, a magnitude 4.5 earthquake required the suspension of injection operations at the well to allow for an analysis of the event and aftershocks. The analyses have been completed and a decision to restart operations is pending. Because the existing deep injection well is nearing the end of its serviceable life, Reclamation is investigating alternatives to protect and enhance the quality of water in the Colorado River. Reclamation is preparing an environmental impact statement to identify and evaluate these alternatives. A draft EIS evaluating a no action alternative and three action alternatives, which are a new deep injection well, solar evaporation ponds, and zero liquid discharge technology was released in December 2019. The final EIS and record of decision are scheduled for release this Summer. The PVU was constructed pursuant to the Colorado River Basin Salinity Control Act of 1974, as amended and supplemented (P.L. 93-320), which authorizes the construction, operation, and maintenance of works in the Colorado River Basin, and began operations in 1996.


from the
Four Corners Construction Office

Looking east, Cutter Lateral Water Treatment Plant construction continues in early March 2020
Looking east, Cutter Lateral Water Treatment Plant construction continues in early March 2020

Cutter Lateral Reach 21 Water Treatment Plant

By Barbara Crockett, P.E., CH2M

The Cutter Lateral Reach 21 Water Treatment Plant construction is nearing completion and is scheduled to begin delivering safe, clean drinking water to communities in the eastern portion of the Navajo Reservation and the southwestern corner of the Jicarilla Apache Reservation later this year. The water treatment process is designed to remove inorganic, organic, and microbial contaminants in accordance with Federal Safe Drinking Water Act regulations for the protection of public health.

Water conveyed from Navajo Reservoir to Cutter Reservoir near Bloomfield, New Mexico will be pumped through a series of 2 pumping plants to the treatment plant, where it will be initially treated by clarification and filtration. This treatment removes small particles and microorganisms before it is disinfected and distributed to the receiving communities by the Navajo Tribal Utility Authority. The small particles and microorganisms that are removed, referred to as “solids,” will be trucked to a nearby landfill to be disposed of properly. The new water treatment plant includes a process operation building, a control room, administrative offices, a laboratory, and maintenance facilities. The state-of-the-art treatment plant has been designed to treat 3.5 million gallons per day initially (Phase 1) and can be expanded to 5.4 million gallons per day to meet future demands (Phase 2). Water from the project will be used for municipal, industrial, and domestic purposes.


from the
Albuquerque Area Office

Daytime photograph of a floating evaporation pan partially immersed in a body of water surrounded by land. The unit displays various panels and antennae for gathering and storing reservoir data.
Collison Floating Evaporation Pan deployed at Cochiti Lake in the Rio Grande located in Central New Mexico. Reclamation photo

Monitoring Open-Water Evaporation from Reclamation Reservoirs

By Melissa Romero, Albuquerque Area Office of Public Affairs

Through collaboration within the Bureau of Reclamation and local partners, the Albuquerque Area Office is experimenting with usage of innovative tracking methods for one of the largest consumptive uses of water in the Southwestern United States: open-water evaporative losses. These projects are aimed at helping water managers better understand and measure evaporation for day-to-day reservoir operations, and ultimately support evaporation suppression efforts. Establishing evaporation rates and understanding total reservoir losses due to evaporation is key to detecting overall available water supply. Additionally, detailed tracking of depletions is critical to Reclamation’s real-time water management and ability to balance the needs of stakeholders, especially during droughts. Andrew Gelderloos, Hydrologist with AAO's Water Management Division shares,

"These projects are a result of the mindset central to Reclamation’s work; every drop of water matters, even the upward drops we cannot see. It is certainly impressive to experience the level of collaboration required to address such complex and dynamic issues working alongside well-established experts and innovators."

To address this vital responsibility, current initiatives merge deployment with testing of advanced technologies, including a modernized floating evaporation pan used to improve concurrent evaporation monitoring. Beginning in 2018, these instruments have been installed in the Rio Grande system at Cochiti Lake, Elephant Butte and Caballo Reservoirs, as well as at Lake Powell in the Colorado Basin. In support of Indian Water Rights Settlements, future deployment is also planned at Zuni Salt Lake within the Pueblo of Zuni in western New Mexico. Unlike traditional “Class A” pans in widespread use on most reservoirs, this redesigned pan experiences corresponding conditions much like the reservoir itself and similar to the eddy covariance towers used in measuring the movement of moisture in the atmosphere above a reservoir. Measurements from floating evaporation pans are used to calibrate evaporation data from several satellites, including Landsat, Modis, and EcoSTRESS, which provide reservoir readings at varying spatial and temporal scales.

Daytime photograph of floating photovoltaic solar panels partially immersed in a body of water surrounded by land.

Floatovoltaics installation at a town water treatment facility in Walden, Colorado. Reclamation photo

Another study underway involves evaluation of both obstacles and opportunities for floating photovoltaic arrays on Reclamation reservoirs. Often referred to as floatovoltaics, this formation of solar panels is installed on water bodies in an effort to suppress evaporation by removing surface insolation. Reclamation is currently evaluating the state of the science. Specifically, this includes examining seven obstacles to greater floatovoltaics implementation at additional reservoirs, and conducting evaluations based on potential costs and feasibility. The team from the Albuquerque Area Office is optimistic this technology holds great promise for power generation as well as conservation.

AAO supports these real-time evaporation monitoring projects through funding opportunities with Reclamation’s Science and Technology Program, the Upper Colorado Basin Region’s Operations Fund, and in partnership with funding from the U.S. Army Corps of Engineers Albuquerque District. Many projects include joint efforts with the Upper Colorado Basin Regional Office, Denver’s Technical Services Center, the University of New Mexico, New Mexico State University, the U.S. Department of Energy’s National Renewable Energy Laboratory, NASA’s Jet Propulsion Laboratory, and the Desert Research Institute. The project team from the AAO includes Dagmar Llewellyn, Andrew Gelderloos and David Park, as well as Brent Tanzy of the Power Resources Office at Elephant Butte Reservoir.


from the
Power Office

From Left: Security Response Force members Zachary Phelan, Jared Leffner, and Anthony Palmero. Reclamation photo

New Security Response Force ensures Glen Canyon Dam’s safety and security

By Glen Canyon Field Division

In June 2019, the Glen Canyon Field Division was the first facility in the Upper Colorado Basin Region to transition to a highly trained Security Response Force. The Security Response Force’s mission is to ensure the safety and protection of Glen Canyon Dam’s employees, visitors, and its national critical infrastructure.

The nine-week Security Response Force basic training program is conducted at the SRF Training Complex located in Grand Coulee, Washington. The basic training program is a singularly robust framework of curriculum for providing a baseline of foundational law enforcement skills. Candidates graduate this academy with more than a basic understanding of case law and the ability to handle firearms safely and effectively. They graduate with belief in themselves and their teammates. They are ready, willing and continue exploring ways to become not only a better officer, but a better neighbor and better Reclamation employee. The transition from contracted security services to the SRF has provided a greater degree of safety and security by ensuring federal regulations, such as the public conduct rule, are enforced on federal land.

The SRF team utilizes industry-proven tactics and experience to make certain that Glen Canyon Dam is a safe public place to visit while also maintaining round-the-clock protection of Reclamation properties.


from the
Provo Area Office

Force Account crews use a crane to place concrete sections of the north inlet bridge in the Mohave Valley Conservation Area.
Force Account crews installing the north inlet bridge at Mohave Valley Conservation Area. Reclamation photo by Rick Sweat

The ‘force’ is with Reclamation's Provo Area Office

By Ryan Proctor, Supervisory Civil Engineer, Field Engineering Division - Construction Services Group

The Bureau of Reclamation’s Construction Services Group or Force Account, which operates out of the Provo Area Office, engages in a variety of construction activities related to Reclamation’s mission as a manager of federal water projects. Force Account specializes in construction and heavy equipment operation for Reclamation projects and other federal and state agencies located in the seventeen Western states.

The Force Account term comes from workforce account. It’s a government wide term for crews that are directly employed by an agency to perform field work, rather than a contractor. Provo’s group began in the early 1990s as an extension of the Provo office materials lab and initially consisted of two-three heavy equipment operators who primarily performed test pit and trench excavation in support of geotechnical investigations. The crew and workload soon expanded to include environmental projects for the Utah Reclamation Mitigation Conservation Commission. This included the middle Provo River Restoration between Jordanelle and Deer Creek Dams, the Upper Provo River high mountain lake stabilization and Lower Duchesne Wetlands projects.

As the group’s technical capabilities increased, other Department of the Interior agencies and regions within Reclamation began to request construction services. Early projects were primarily wetland restoration projects with traditional construction features such as concrete water control structures, gates, and pipelines. Work included a multi-year effort to stabilize the Las Vegas Wash against erosion, construction at the Moapa Valley National Wildlife Refuge, and construction of backwater wetlands and a fish hatchery on the Ouray National Wildlife Refuge.

In 2005, the authorization of the Lower Colorado River Multi Species Conservation Program created the opportunity for the Force Account to work with the MSCP to create 8,100 acres of habitat for fish and wildlife along the lower Colorado River. To date, the Provo crew has installed thousands of feet of pipe, constructed dozens of concrete water control structures and excavated approximately 5 million cubic yards of material. Notable projects include Hart Mine Marsh, Laguna Division, Mohave Valley, and Planet Ranch Conservation Areas located along the Lower Colorado River in Arizona and California.

Around 2010, the Force Account began work for Reclamation’s Dam Safety Office as well as the U.S. Forest Service’s dam safety program. This work has included geotechnical investigations, toe drain replacement, filter installation, seismic berm construction, seepage remediation, outlet works installation, and concrete spillway construction. Completion of these projects have successfully lowered the dam safety risks and brought the facilities into compliance with federal dam safety guidelines for continued safe operation.

The Provo Force Account currently has about 20 employees, comprised of a civil engineer, civil engineering technicians, and engineering equipment operators. They continue to be an asset to the Provo Area Office and the whole of Reclamation.


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Interior Region 7 • Upper Colorado Basin
125 South State Street, Room 8100
Salt Lake City, Utah 84138-1147

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