Crews detonated charges at the excavation site for the Folsom Dam auxiliary spillway in Folsom, Calif., April 10 to loosen bedrock for removal. On April 13, the Corps completed its final rock blasting for the foundation of the control structure. More than 3.5 million cubic yards of rock and soil were removed from the auxiliary spillway site. With blasting complete, the Sacramento District will now shift its focus to construction of the spillway's control structure, essentially a second dam. The spillway is scheduled to be ready for use in 2017 and will allow Folsom Dam to release water sooner and more safely, helping reduce flood risk for the Sacramento region. (Video courtesy of Granite Construction)

Roger Henderson, a lead engineer for the U.S. Army Corps of Engineers Sacramento District, discusses some of the modifications the Corps will make to the Isabella Lake dams during a public meeting Sept. 25, 2013, in Kernville, Calif. The Corps held the public meeting to talk with local residents and business operators about how construction of the dam safety modification project will temporarily impact recreation at the lake, and listen to their ideas for solutions to reduce those impacts. The Corps will release their findings in a draft recreation plan, which is scheduled for release in December 2013. (U.S. Army photo by Tyler Stalker/Released)

Authorized in the Flood Control Act of 1946, construction on Gathright Dam began in 1974 and completed in 1979. The dam sits about 20 miles upstream from Covington, Va., on the Jackson River in Alleghany County, Va. The dam is a rolled rock fill embankment with a compacted earthen clay core, outlet works and an emergency spillway located at the right abutment. The embankment is 1,310 feet long with a height of 257 feet. The width is 32 feet at the top of the dam with a maximum width of 1000 feet at its base.

(U.S. Army Photo)

A labyrinth of walkways twists and turns through a sea of rebar Sept. 23, 2015, at the stilling basin of the new Folsom Dam auxiliary spillway in Folsom, California. When completed, the stilling basin below the stepped chute will help reduce water velocity so that the water can safely flow into the American river without eroding downstream river banks.

The project is part of a $900-million cooperative effort between the U.S. Army Corps of Engineers, U.S. Bureau of Reclamation, Central Valley Flood Protection Board and the Sacramento Area Flood Control Agency to improve the safety of Folsom Dam and reduce flood risk for the Sacramento area. (U.S. Army photo by Randy Gon / Released)

U.S. Army Corps of Engineers levee system inspection ratings in California's Central Valley, as of Aug. 22, 2012. With the expiration of the California Central Valley Flood System Improvement Framework in June 2012, 17 levee systems that received unacceptable inspection ratings for deficiencies covered by the framework became inactive in the the Corps' levee Rehabilitation and Inspection Program. Inactive systems are ineligible for federal levee rehabilitation assistance after a flood or storm, though the Corps will always help levee managers flood fight in an emergency. For more on Corps levee inspections in the Central Valley, visit the Sacramento District's levee safety website: www.spk.usace.army.mil/Missions/CivilWorks/LeveeSafetyPro... For a high-resolution PDF version of this map, please contact the Sacramento District's public affairs office at spk-pao@usace.army.mil. (U.S. Army illustration/Released)

Col. Michael Farrell, commander for the U.S. Army Corps of Engineers Sacramento District, speaks during a media event and site tour April 26, 2014 at Folsom Dam auxiliary spillway in Folsom, Calif. Elected officials and project partners came together to celebrate the transition from concrete placement to gate installation this summer on the new dam, which will allow operators to release water earlier and more quickly during large storm events. The auxiliary spillway project is part of a $900-million cooperative effort to improve the safety of Folsom Dam and reduce flood risk for the Sacramento area. (U.S. Army photo by Capt. Michael Meyer/Released)

Contractors working for the Sacramento District construct the support system for the rising Folsom Dam auxiliary spillway on March 14. The control structure—essentially a second dam—will stand as tall as the Statue of Liberty upon completion, estimated in October 2017, and will help reduce the risk of flooding in the Sacramento region. (U.S. Army photo by Capt. Michael N. Meyer/Released)

Crews detonated charges at the excavation site for the Folsom Dam auxiliary spillway in Folsom, Calif., April 10 to loosen bedrock for removal. On April 13, the Corps completed its final rock blasting for the foundation of the control structure. More than 3.5 million cubic yards of rock and soil were removed from the auxiliary spillway site. With blasting complete, the Sacramento District will now shift its focus to construction of the spillway's control structure, essentially a second dam. The spillway is scheduled to be ready for use in 2017 and will allow Folsom Dam to release water sooner and more safely, helping reduce flood risk for the Sacramento region. (Video courtesy of Granite Construction)

Authorized in the Flood Control Act of 1946, construction on Gathright Dam began in 1974 and completed in 1979. The dam sits about 20 miles upstream from Covington, Va., on the Jackson River in Alleghany County, Va. The dam is a rolled rock fill embankment with a compacted earthen clay core, outlet works and an emergency spillway located at the right abutment. The embankment is 1,310 feet long with a height of 257 feet. The width is 32 feet at the top of the dam with a maximum width of 1000 feet at its base.

(U.S. Army Photo)

Paige Caldwell (left), chief of emergency operations and Lee Bass (center), acting deputy for programs and project management for the U.S. Army Corps of Engineers Sacramento District, pose with U.S. Rep. John Garamendi and their shovels after the Aug. 7, 2013 ceremonial groundbreaking of a massive levee improvement project on the Feather River in Yuba City, Calif. (U.S. Army photo by DeDe Cordell/Released)

Contractors working for the Sacramento District construct the support system for the rising Folsom Dam auxiliary spillway on March 14. The control structure—essentially a second dam—will stand as tall as the Statue of Liberty upon completion, estimated in October 2017, and will help reduce the risk of flooding in the Sacramento region. (U.S. Army photo by Capt. Michael N. Meyer/Released)

Maj. Gen. William T. Grisoli (left), Deputy Commanding General for Civil and Emergency Operations for the U.S. Army Corps of Engineers, accepts a welcome greeting from Mike Finnegan, area manager for the Bureau of Reclamation’s Folsom Dam office. Finnegan and his staff offered a bird’s eye view of the auxiliary spillway construction to Grisoli and other visiting senior leaders from the Corps. (U.S. Army photo / Michael J. Nevins)

The Little Rock District’s Motor Vessel Shorty Baird and Big Red Crane Barge supported River Assault 2013 on the McClellan-Kerr Arkansas River Navigation System on July 24 by providing an observation platform on the district’s inspection barge. River Assault 2013 involved various U.S. Army Reserve engineer units from around the country that culminated with the construction of a floating improved ribbon bridge across the River.

A bulldozer scoops up large rocks Sept. 24, 2014 as a passerby looks down on the construction site for a new dry bypass along the Napa River in downtown Napa, California. The bypass will shortcut floodwater to avoid a horseshoe-like bend in the river that often backs up and causes flooding into downtown Napa. Construction of the new bypass began in April 2014, and is scheduled for completion in summer 2015. (U.S. Army photo by Tyler Stalker/Released)

Contractors with the U.S. Army Corps of Engineers Sacramento District package a core sample taken during excavation of borehole test sites May 1, 2006, at Success Dam near Porterville, Calif. The core samples and boreholes are used to evaluate the earthen structure and stability of soil and rock underneath the dam during the Corps’ Success Dam Safety Modification Study. (U.S. Army photo by Betty J. Bailey)

John Bianco (in red) a longtime engineer with the U.S. Army Corps of Engineers, North Atlantic Division Office, discusses flooding issues with USACE personnel at Beatties Dam in Little Falls, N.J., while traveling around the Passaic River Basin Wednesday September 19, 2012. Ray Schembri (in blue), a longtime hydraulic engineer with the U.S. Army Corps of Engineers, New York District, took a group of USACE personnel working on the Passaic River Basin General Re-evaluation Study (including mostly engineers, but also biologists, real estate specialists and more) around the Passaic River Basin to see in person some of the major hydraulic points of interest so they could get a better understanding of the basin. The study is a partnership between the U.S. Army Corps of Engineers and the state of New Jersey to evaluate and compare potential flood risk management alternatives for the Passaic River Basin. Click here to learn more about the study.

One of the six alternatives being evaluated as part of the study includes looking at possible modifications to Beatties Dam. (photo by Chris Gardner, New York District public affairs)

The labor-intensive job of diverting fresh water into the Savannah National Wildlife Refuge has become easier since the U.S. Army Corps of Engineers Savannah District replaced the old wooden structures with custom-built diversion gates. The Fresh Water Control System was originally installed as a mitigation feature for the 1977 Savannah harbor deepening project. At a cost of $12.5 million, the new stainless steel structures modernize and automate the process of controlling water in the area. Previously, wildlife managers with the U.S. Fish and Wildlife Service could only route water to 3,000 acres of wetlands for waterfowl; with the gate improvements, the water management area has doubled to 6,000 acres. The project was completed in autumn 2011.

The labor-intensive job of diverting fresh water into the Savannah National Wildlife Refuge has become easier since the U.S. Army Corps of Engineers Savannah District replaced the old wooden structures with custom-built diversion gates. The Fresh Water Control System was originally installed as a mitigation feature for the 1977 Savannah harbor deepening project. At a cost of $12.5 million, the new stainless steel structures modernize and automate the process of controlling water in the area. Previously, wildlife managers with the U.S. Fish and Wildlife Service could only route water to 3,000 acres of wetlands for waterfowl; with the gate improvements, the water management area has doubled to 6,000 acres. The project was completed in autumn 2011.

110328-A-ZZ999-001 – An aerial view of New Hogan Lake, a U.S. Army Corps of Engineers Sacramento District park and recreation area in Valley Springs, Calif., Mar. 28, 2011, shows the lake at a much higher capacity than it is today. This winter’s unseasonably dry weather has caused the lake to hit record low levels. (U.S. Army photo by Mike Nevins/Released)

(From left) U.S. Army Corps of Engineers Sacramento District commander Col. Michael Farrell, Rep. Doris Matsui, Folsom Mayor Kerri Howell, Rep. Ami Bera, Central Valley Flood Protection Board executive officer Jay Punia, Department of Water Resources director Mark Cowin and Rep. Tom McClintock sign their name on the wall of the new auxiliary dam at Folsom Dam in Folsom Calif., during a media event and site tour April 26, 2014. Elected officials joined the Corps and project partners to celebrate the transition from concrete placement to gate installation, which will begin later this summer. The auxiliary dam is scheduled to be constructed by April 2015, and the entire auxiliary spillway project is expected to be wrapped up by October 2017. (U.S. Army photo by Tyler Stalker/Released)

Tree trunks peek out from the banks of the Napa Creek in Napa, Calif., April 12, 2013. The tree trunks, as well as thousands of native species plantings, will provide habitat for fish and other river species. The environmental restoration work is part of the $14.8 million Napa Creek Project, a joint effort of the U.S. Army Corps of Engineers, the city of Napa, and the Napa Flood Control and Water Conservation District funded by the American Recovery and Reinvestment Act of 2009 to reduce flood risk for the city. The Corps also widened the creek and installed box culverts – tunnels large enough for a car to drive through – in October 2012 to help move flood water from the creek more quickly to the Napa River and away from homes and businesses. (U.S. Army photo by Tyler Stalker/Released)

The U.S. Army Corps of Engineers Europe District , in cooperation with Bavarian environmental authorities, the garrison and the bauamt keep Grafenwoehr’s waters in check Sept. 7, 2011 by repairing two dams. The dams, built by German troops prior to World War I, are now over 100 years old. During a routine safety inspection in 2009 the dams were found to be deficient. Today, repair work is underway. (U.S. Army Corps of Engineers photo by Rachel Goodspeed)

The labor-intensive job of diverting fresh water into the Savannah National Wildlife Refuge has become easier since the U.S. Army Corps of Engineers Savannah District replaced the old wooden structures with custom-built diversion gates. The Fresh Water Control System was originally installed as a mitigation feature for the 1977 Savannah harbor deepening project. At a cost of $12.5 million, the new stainless steel structures modernize and automate the process of controlling water in the area. Previously, wildlife managers with the U.S. Fish and Wildlife Service could only route water to 3,000 acres of wetlands for waterfowl; with the gate improvements, the water management area has doubled to 6,000 acres. The project was completed in autumn 2011.

U.S. Army Corps of Engineers Sacramento District workers are installing new City of Sacramento's Sump Station 10 lines near the River Park neighborhood of Sacramento, California, shown Oct. 3, 2014. The seepage cutoff wall is complete and crews are now filling in a gap where construction was complicated by the station's pipes, which run through the levee. (U.S. Army photo by Todd Plain/Released)

Lee Bass, acting deputy for programs and project management for the U.S. Army Corps of Engineers Sacramento District, addresses a crowd of nearly 200 in attendance to celebrate the Aug. 7, 2013 groundbreaking of a massive levee improvement project on the Feather River in Yuba City, Calif. (U.S. Army photo by DeDe Cordell/Released)

John Bianco (in red) a longtime engineer with the U.S. Army Corps of Engineers, North Atlantic Division Office, discusses flooding issues with USACE personnel at Beatties Dam in Little Falls, N.J., while traveling around the Passaic River Basin Wednesday September 19, 2012. Ray Schembri (in blue), a longtime hydraulic engineer with the U.S. Army Corps of Engineers, New York District, took a group of USACE personnel working on the Passaic River Basin General Re-evaluation Study (including mostly engineers, but also biologists, real estate specialists and more) around the Passaic River Basin to see in person some of the major hydraulic points of interest so they could get a better understanding of the basin. The study is a partnership between the U.S. Army Corps of Engineers and the state of New Jersey to evaluate and compare potential flood risk management alternatives for the Passaic River Basin. Click here to learn more about the study.

One of the six alternatives being evaluated as part of the study includes looking at possible modifications to Beatties Dam.

The labor-intensive job of diverting fresh water into the Savannah National Wildlife Refuge has become easier since the U.S. Army Corps of Engineers Savannah District replaced the old wooden structures with custom-built diversion gates. The Fresh Water Control System was originally installed as a mitigation feature for the 1977 Savannah harbor deepening project. At a cost of $12.5 million, the new stainless steel structures modernize and automate the process of controlling water in the area. Previously, wildlife managers with the U.S. Fish and Wildlife Service could only route water to 3,000 acres of wetlands for waterfowl; with the gate improvements, the water management area has doubled to 6,000 acres. The project was completed in autumn 2011.

The sun bursts through the clouds Dec. 3, 2014 after heavy rains soaked construction of a new flood risk reduction bypass along the Napa River in downtown Napa, California. The First Street bridge marks the outlet of the bypass, which will relieve flows during storm events by avoiding a large bend in the river that historically overtops and floods into downtown. (U.S. Army photo by Tyler M. Stalker/Released)

Little Rock District hosts Industry Day on Dec. 3, at the Arkansas State Library. The purpose of Industry Day is to conduct market research at a programmatic level to enable the district to establish acquisition plans for Fiscal Year 14 as well as an opportunity to partner with local contractors to bolster interest in Corps contracting requirements.

“The most important thing we need to talk about today is communication,” said District Commander Col. Courtney W. Paul

The District has a vast and diverse mission that encompasses both military and civil projects. Responsible for operating 12 multipurpose lakes, 13 locks and dams, 308 miles of navigation on the McClellan-Kerr Arkansas River Navigation System, 178 parks and 7 hydroelectric plants. SWL provides support to military facilities within our boundaries including Little Rock Air Force Base and Fort Chaffee as well as to customers in Texas and Oklahoma

Contractors for the U.S. Army Corps of Engineers Sacramento District install electrical lines down the west wall at the excavation site for the Folsom Dam auxiliary spillway in Folsom, Calif., April 5, 2012. The electrical lines will power the concrete batch plant, with concrete paving of the spillway chute scheduled to begin in May. The spillway, scheduled to be ready for use in 2017, will allow Folsom Dam to release water sooner and more safely. The project is part of the Folsom Dam Joint Federal Project, a joint effort of the Sacramento District, the U.S. Bureau of Reclamation, the Central Valley Flood Protection Board and the Sacramento Area Flood Control Agency to improve the safety of the dam and reduce flood risk for the greater Sacramento area. (U.S. Army photo by Michael J. Nevins/Released)

A northern view June 27, 2014, of jet grouting silos near the Howe Avenue bridge before it crosses the American River in Sacramento, Calif. Jet grouting is a surgically-precise method of injecting seepage cutoff walls into levees where construction is constrained by encroachments like buried utilities and bridges. Seepage cutoff walls strengthen the levee and help prevent water from seeping through or underneath. Crews install the wall by drilling into the levee and injecting the wall in overlapping columns. (U.S. Army photo by Todd Plain/Released)

U.S. Army Corps of Engineers Sacramento District contract workers check the quality of a recently completed seepage cutoff wall Aug. 22, 2014, near the River Park neighborhood of Sacramento, California. The project, near the City of Sacramento's Sump Station 10, fills a gap in the levee's existing cutoff wall where construction was complicated by the station's pipes, which run through the levee. Now that the wall is done, crews will reinstall the city's sump lines that were moved to complete the project and then rebuild the levee. Work at the sump and six other locations along the lower American River represent the last of this river's levee-gap fixes scheduled to be completed in 2015. (U.S. Army photo by Todd Plain/Released)

Brad Call, a technical engineer for Folsom Dam auxiliary spillway construction, points out areas of interest on the new dam to Hungarian members of the Floodplain Management Association during a talking tour April 10, 2014 on top of the auxiliary dam. “The idea was to bring young engineers from all over [Hungary] to get new perspectives and new ideas,” said Martin Balinta, an engineer with the Hungarian delegation (second from right). (U.S. Army photo by Capt. Michael N. Meyer/Released)

(From left to right) David Neff, project engineer with the U.S. Army Corps of Engineers Sacramento District; Col. Bill Leady, Sacramento District Engineer; James Dalton, chief of Engineering and Construction for the Corps; Maj. Gen. William T. Grisoli, Deputy Commanding General for Civil and Emergency Operations for the Corps; and Col. Mike Wehr, commander for the South Pacific Division, view a rendering and discuss details of the Folsom Dam auxiliary spillway in Folsom, Calif., June 29, 2011. Neff provided a briefing about the progress and construction timelines at the spillway to the senior leaders during the visit. (U.S. Army photo / Michael J. Nevins)

Water flows around the final bend of Napa Creek before pouring into the Napa River in Napa, Calif., March 14, 2012, covering tree stumps placed along the banks to provide fish with natural habitat. The U.S. Army Corps of Engineers Sacramento District placed the stumps as part of the Napa Creek Project to reduce flood risk in downtown Napa. The district also widened the creek channel and built box culverts to reroute flood waters out of the creek and directly into the Napa River, reducing the chance of flooding to nearby neighborhoods. The $14.8 million American Recovery and Reinvestment Act of 2009-funded Napa Creek Project is a joint effort of the Sacramento District, the city of Napa, and the Napa Flood Control and Water Conservation District. (U.S. Army photo by Victor Reynoso/Released)

MARYSVILLE, Calif. – Stirring paddles on a big rig crane lift out of a slurry wall mix at the Marysville Ring Levee project in Marysville, Calif., July 13. The Corps is using a deep soil mixing process, which combines clay bentonite and cement with existing soil to create a thick, solid surface that won’t allow water to leak through or beneath the levee, to upgrade a 4,000-foot section of the levee as part of the project’s first phase. The yellow and pink flags on the levee are laid out to precisely identify the exact location for insertion of the augers. This ensures a continuous and more homogenous wall. Once complete, the slurry wall will be three-feet wide by 110-120 feet deep, and located in the center line of the levee. This $10.8 million phase of the project has been funded by the American Recovery and Reinvestment Act of 2009 and is scheduled to be completed in November 2011. (U.S. Army Photo / Michael J. Nevins)

Greers Ferry Lake Park Ranger David Moore talks to a group of school kids at the Cleburne County Fair about the importance of water safety.

The labor-intensive job of diverting fresh water into the Savannah National Wildlife Refuge has become easier since the U.S. Army Corps of Engineers Savannah District replaced the old wooden structures with custom-built diversion gates. The Fresh Water Control System was originally installed as a mitigation feature for the 1977 Savannah harbor deepening project. At a cost of $12.5 million, the new stainless steel structures modernize and automate the process of controlling water in the area. Previously, wildlife managers with the U.S. Fish and Wildlife Service could only route water to 3,000 acres of wetlands for waterfowl; with the gate improvements, the water management area has doubled to 6,000 acres. The project was completed in autumn 2011.

TAKAHIK River Valley Hikers adopted the dated trail head sign at the Bona Dea Trails and Sanctuary in Russellville and transformed it into a beautiful informative display with flowers.

We are very thankful for all the volunteers that make visiting our parks and lakes more enjoyable. If you’ve spent much time at a Corps park you probably witnessed volunteers performing various tasks from managing gate houses to picking up trash. To learn more about volunteering in the Russellville area please contact the Russellville Project Office at 479-968-5008

Authorized in the Flood Control Act of 1946, construction on Gathright Dam began in 1974 and completed in 1979. The dam sits about 20 miles upstream from Covington, Va., on the Jackson River in Alleghany County, Va. The dam is a rolled rock fill embankment with a compacted earthen clay core, outlet works and an emergency spillway located at the right abutment. The embankment is 1,310 feet long with a height of 257 feet. The width is 32 feet at the top of the dam with a maximum width of 1000 feet at its base.

(U.S. Army Photo)

Michelle Lockhart (right), a civil engineer with the U.S. Army Corps of Engineers Sacramento District, and Jon Balzer, a civil engineer and contractor for the Corps, perform a post rainfall event inspection at the excavation site for the auxiliary spillway at the Folsom Dam in Folsom, Calif., April 26, 2012. Runoff that enters the excavation site is treated, monitored and filtered before being pumped into Folsom Lake. Lockhart and Balzer inspected water ponds, which capture runoff, for erosion damage. The auxiliary spillway construction is part of the Folsom Dam Joint Federal Project, a joint effort of the Sacramento District, the U.S. Bureau of Reclamation, the Central Valley Flood Protection Board and the Sacramento Area Flood Control Agency to improve the safety of the dam and reduce flood risk for the greater Sacramento area. (U.S. Army photo by Michael J. Nevins/Released)

R.D. James (Right), assistant secretary of the Army for Civil Works, recognizes (Left to Right) Tim Dunn, deputy chief of Operations Division; Eric Pagoria, Construction Branch chief; and Kirsten Ronholt, Office of Counsel, for excellence during a town meeting Nov. 14, 2019 at the district’s headquarters in Nashville, Tenn. (USACE Photo by Mark Abernathy)

The labor-intensive job of diverting fresh water into the Savannah National Wildlife Refuge has become easier since the U.S. Army Corps of Engineers Savannah District replaced the old wooden structures with custom-built diversion gates. The Fresh Water Control System was originally installed as a mitigation feature for the 1977 Savannah harbor deepening project. At a cost of $12.5 million, the new stainless steel structures modernize and automate the process of controlling water in the area. Previously, wildlife managers with the U.S. Fish and Wildlife Service could only route water to 3,000 acres of wetlands for waterfowl; with the gate improvements, the water management area has doubled to 6,000 acres. The project was completed in autumn 2011.

TAKAHIK River Valley Hikers adopted the dated trail head sign at the Bona Dea Trails and Sanctuary in Russellville and transformed it into a beautiful informative display with flowers.

We are very thankful for all the volunteers that make visiting our parks and lakes more enjoyable. If you’ve spent much time at a Corps park you probably witnessed volunteers performing various tasks from managing gate houses to picking up trash. To learn more about volunteering in the Russellville area please contact the Russellville Project Office at 479-968-5008

The labor-intensive job of diverting fresh water into the Savannah National Wildlife Refuge has become easier since the U.S. Army Corps of Engineers Savannah District replaced the old wooden structures with custom-built diversion gates. The Fresh Water Control System was originally installed as a mitigation feature for the 1977 Savannah harbor deepening project. At a cost of $12.5 million, the new stainless steel structures modernize and automate the process of controlling water in the area. Previously, wildlife managers with the U.S. Fish and Wildlife Service could only route water to 3,000 acres of wetlands for waterfowl; with the gate improvements, the water management area has doubled to 6,000 acres. The project was completed in autumn 2011.

Construction started Nov. 19 to stabilize a portion of the east bank of the White River in Augusta Ark.

Bank erosion has been occurring, threatening to wash away Augusta's historic American Legion Hut, which is listed on the National Register of Historic Places, a city road, and a portion of the city sewer main.

This work is being done with funds from the Section 14 program, whose purpose is to construct emergency streambank protection to prevent natural erosion processes from damaging roads, sewer lines and historic structures, among other things. The work is being cost-shared with the City of Augusta.

Construction is expected to be complete by early spring, 2014.

Lt. Col. John L. Hudson (Right), U.S. Army Corps of Engineers Nashville District commander; Bill DeBruyn (Second from Right), resident engineer; Linda Adcock, project manager; update Lt. Gen. Thomas Bostick, USACE commander and chief engineer, on the Center Hill Dam Seepage Rehabilitation Project during a tour of the project in Lancaster, Tenn., July 22, 2014. (USACE photo by Leon Roberts)

View of the lake side of Folsom Dam auxiliary spillway as seen by group of Hungarian engineers representing the Floodplain Management Association during briefing and site tour on April 10, 2014. The project is scheduled to be completed by October 2017 and is the centerpiece of a broader multi-agency effort to modernize Sacramento's flood control infrastructure and reduce flood risk for the region. (U.S. Army photo by Capt. Michael N. Meyer/Released)

Crews for the U.S. Army Corps of Engineers Sacramento District are preparing for levee work this fall along the American River near the Fairbairn Water Treatment Plant in Sacramento, Calif., shown Oct. 3, 2013. The Corps built more than 20 miles of seepage cutoff walls into American River levees between 2000 and 2002, but work was set aside for later where complicated encroachments existed such as utilities, power lines and bridges. (U.S. Army photo by Todd Plain/Released)

The U.S. Army Corps of Engineers Europe District continues work Sept. 7, 2011 on the $380,000 repair, cleaning and grubbing of the Schlatterweiher and Hammerweiher dams at Grafenwoehr training area. The project scope is limited to critical repairs but USACE will also provide plans for reoccurring maintenance in compliance with host nation environmental standards. Read more at www.army.mil/article/64945/ (U.S. Army Corps of Engineers photo by Rachel Goodspeed)