History

  • 1884

    August 1884

    State engineer E.S. Nettleton conducts the first preliminary survey of a possible diversion project to import West Slope water to the Front Range.
  • 1889

    1889

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    The state of Colorado appropriates $25,000 to survey potential water diversion routes from Grand Lake to the South Platte River basin. The survey results are unfavorable.
  • 1890

    1890

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    Irrigators construct small transmountain diversions to import water to the Poudre River basin.
  • 1902

    June 17, 1902

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    President Theodore Roosevelt signs the Reclamation Act (also known as the Newlands Act) into law, creating the United States Reclamation Service.
  • July 1902

    Secretary of the Interior Ethan Allen Hitchcock establishes the U.S. Reclamation Service within the U.S. Geological Survey to study potential water development projects in 17 western states.
  • 1905

    1905

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    The Reclamation Service withdraws land from public entry near Grand Lake for a potential future water diversion project.
  • 1907

    1907

    The Reclamation Service becomes a separate organization within the Interior Department and is renamed the Bureau of Reclamation.
  • 1915

    Jan. 26, 1915

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    The U.S. Congress establishes Rocky Mountain National Park. The enabling legislation includes the following: “The United States Reclamation Service may enter upon and utilize for flowage or other purposes any area within said park which may be necessary for the development and maintenance of a government reclamation project.”
  • 1921

    1921

    The U.S. Congress officially changes the name of the Grand River to the Colorado River. Proponents request the change to officially identify the headwaters of the Colorado River and differentiate it from the Green River in Wyoming.
  • 1922

    Nov. 24, 1922

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    Congress ratifies the first interstate river compact in the United States. The Colorado River Compact apportions the use of Colorado River water between the Upper (Colorado, Wyoming, Utah and New Mexico) and Lower (California, Arizona and Nevada) basin states.
  • 1930

    1930

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    The Great Depression hits. Drought and dust storms force many northeastern Colorado farmers to halt all efforts to raise crops.
  • 1933

    Aug. 17, 1933

    Northern Colorado leaders organize the Grand Lake Committee – predecessor to the Northern Colorado Water Users Association and the Northern Colorado Water Conservancy District (NCWCD/Northern Water) – to pursue a Grand Lake water diversion project.
  • December 1933

    Engineers report that a Grand Lake water diversion project is feasible.
  • 1935

    January 1935

    The Reclamation Service allots $150,000 to survey and estimate costs for the Grand Lake Project.
  • Jan. 25, 1935

    Grand Lake Project proponents establish the Northern Colorado Water Users Association.
  • 1936

    July 1, 1936

    Congress officially renames the Grand Lake Project the Colorado-Big Thompson Project.
  • 1937

    May 13, 1937

    Colorado Governor Teller Ammons signs the Conservancy District Act into law.
  • June 1937

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    Proponents circulate petitions throughout northeastern Colorado to organize Northern Water.
  • June 11, 1937

    The Northern Colorado Water Users Association and the Western Slope Protective Association reach an agreement to endorse the C-BT Project, including construction of Green Mountain Reservoir.
  • June 15, 1937

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    U. S. Senator Alva B. Adams presents Senate Document 80 to Congress (a development plan and cost estimates for the C-BT Project).
  • June 24, 1937

    Congress approves Senate Document 80, authorizing construction of the C-BT Project.
  • June 28, 1937

    Northeastern Colorado voters authorize Northern Water to sign a contract with the United States and to assess a 1 mill ad valorem tax on all properties within Northern Water boundaries to build and operate the C-BT Project. The measure is approved by a 17:1 margin.
  • Aug. 9, 1937

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    President Roosevelt signs the Interior Department appropriations bill committing $900,000 in construction funds to the C-BT Project.
  • Sept. 20, 1937

    The District Court of Weld County orders the creation of Northern Water.
  • Sept. 28, 1937

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    The Northern Water Board of Directors meets for the first time in the basement of the Greeley Tribune building. This location is Northern Water's headquarters until May 27, 1954.
  • Nov. 12, 1937

    Interior Secretary Harold Ickes considers protests against C-BT Project funding, but he determines the project is feasible and forwards his findings to President Roosevelt.
  • Dec. 27, 1937

    President Roosevelt concurs with Harold Ickes and grants the C-BT Project final approval.
  • 1938

    July 5, 1938

    Northern Water signs a contract with the United States to repay a portion of C-BT Project construction costs.
  • Dec. 1, 1938

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    Warner Construction Company begins excavating the foundation for Green Mountain Reservoir dam, the first major C-BT Project feature constructed.
  • 1940

    June 23, 1940

    Construction begins on the Continental Divide Tunnel. One crew begins from Grand Lake on the West Slope while a second team tunnels from a location near Estes Park on the East Slope. When complete the tunnel is the longest ever built from two separate headings.
  • 1941

    Dec. 5, 1941

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    Work begins on the Lake Granby Dam and diversion tunnel.
  • 1942

    Dec. 31, 1942

    The War Production Board halts all construction work on C-BT Project features except the power plant at Green Mountain Reservoir.
  • 1943

    May 1943

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    Green Mountain Power Plant produces its first electricity.
  • July 1943

    The War Production Board allows C-BT Project construction to resume on a limited basis.
  • 1944

    April 24, 1944

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    Work on Shadow Mountain Dam begins. The War Production Board grants special allowance for continued C-BT Project construction for war-time food production.
  • June 10, 1944

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    Crews working from both the West and East slopes hole through the Continental Divide Tunnel. NBC radio broadcasts the event live to the nation. A check of the center line and grade reveals the two sides are off by only a penny's width.
  • Dec. 21, 1944

    President Roosevelt signs legislation to rename the tunnel after the late Senator Alva B. Adams.
  • 1945

    November 1945

    Construction workers complete Shadow Mountain Dam and spillway.
  • 1947

    1947

    The C-BT Project diverts 6,014 acre feet of water to the East Slope for irrigation.
  • June 23, 1947

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    Ten years after work began on the C-BT Project, and seven years to the day after tunnel construction began, officials dedicate the Adams Tunnel. The first C-BT water is delivered to the East Slope.
  • 1948

    Nov. 1, 1948

    Crews close the gates at Olympus Dam, enabling water to be stored in Lake Estes.
  • 1949

    Sept. 14, 1949

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    Water is stored in Lake Granby for the first time.
  • 1950

    July 19, 1950

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    Work begins on the dams at Carter Lake.
  • 1951

    Jan. 10, 1951

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    Water is stored for the first time in Horsetooth Reservoir.
  • Jan. 25, 1951

    Water is pumped from Lake Granby into Shadow Mountain Reservoir for the first time.
  • July 20, 1951

    Colorado Gov. Lee Knous and others dedicate the Granby Pump Plant and sponsor a fishing contest in conjunction with the ceremony.
  • July 21, 1951

    The first C-BT Project water is released from Horsetooth Reservoir into the Poudre River.
  • 1952

    Sept. 19, 1952

    Crews finish building the dams at Carter Lake.
  • 1953

    Jan. 1, 1953

    Severe drought grips eastern Colorado through 1956.
  • April 2, 1953

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    Water is stored in Willow Creek Reservoir for the first time.
  • June 1, 1953

    Following the death of Charles Hansen, Greeley Tribune editor and first Northern Water Board president, the District looks for a new headquarters location close to C-BT Project features and Reclamation’s new office southwest of Loveland.
  • Sept. 8, 1953

    The Northern Water Board votes to include the City of Boulder in District boundaries. The Board also agrees to purchase 2.6 acres west of Loveland for a new headquarters. The site is a cherry orchard.
  • 1954

    Feb. 26, 1954

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    Water is pumped from Flatiron Reservoir into Carter Lake for the first time, bringing Colorado River water to the Little Thompson and St. Vrain valleys.
  • May 27, 1954

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    After 17 years in the basement of the Greeley Tribune building, Northern Water moves to its new headquarters west of Loveland. The District has four full-time employees.
  • 1955

    Oct. 12, 1955

    U.S. District Court issues a final decree stipulating the quantities of water the C-BT Project may divert, store and deliver.
  • 1956

    Jan. 1, 1956

    Construction crews finish the South Platte Supply Canal, the final C-BT Project feature Congress authorized in 1937.
  • Aug. 11, 1956

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    Northern water officials rename the Horsetooth Feeder Canal and the Poudre Supply Canal in honor of Charles Hansen, Greeley Tribune editor, C-BT Project proponent and first Northern Water Board president.
  • Sept. 10, 1956

    Northern Water and Reclamation officials sign C-BT Project Supplemental Contract No. 2, authorizing a five-year interim period for Northern Water to accumulate reserve funds for possible emergencies.
  • 1957

    1957

    The C-BT Project is declared complete and fully operational.
  • 1960

    Nov. 9, 1960

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    A Weld County District Court order expands the Northern Water Board from 11 to 12 directors. The additional appointee represents Boulder County, which has experienced a 53 percent population increase between 1950 and 1960.
  • 1962

    Jan. 1, 1962

    A 40-year repayment period commences for Northern Water's portion of C-BT Project facilities and construction costs.
  • 1965

    October 1965

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    Engineers rebuild Granby Dam spillway after discovering the original design allows water to undercut bedrock adjacent to the dam's base.
  • 1968

    1968

    Northern Water purchases 11 acres adjoining the south and west sides of its current property to expand its headquarters.
  • 1970

    July 6, 1970

    Windy Gap Project participants formally establish Northern Water's Municipal Subdistrict, the first subdistrict ever created under the Water Conservancy Act. Construction begins on a new Northern Water headquarters.
  • 1971

    April 27, 1971

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    Northern Water moves into its new headquarters at 1250 N. Wilson Avenue in Loveland. This location serves as the organization’s principal place of business until August 28, 2003.
  • 1973

    Oct. 3, 1973

    Northern Water, Subdistrict and Reclamation sign a carriage contract, allowing the Subdistrict to utilize C-BT Project facilities to transport and deliver the Subdistrict’s Windy Gap Project water.
  • 1976

    July 31, 1976

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    A flash flood on the Big Thompson River kills 145 people and causes more than $35 million in property damage. Flood water and debris destroy the 240-foot-long Big Thompson Siphon, halting C-BT Project water deliveries to Horsetooth Reservoir. Reclamation officials oversee fabrication and installation of a new siphon is operational in 88 days.
  • 1977

    1977

    Drought hits northeastern Colorado from 1977 to 1978, and Horsetooth Reservoir reaches its lowest level since it was first filled in the 1950s.
  • 1980

    April 30, 1980

    The Subdistrict reaches an agreement with the Colorado River Water Conservation District and other West Slope interests. The West Slope agrees to no longer oppose the Windy Gap Project, and the Subdistrict commits to study and construct the Azure Project to benefit the West Slope.
  • 1981

    1981

    Northern Water establishes an Irrigation Management Service to promote wise agricultural water use. The IMS is part of Northern Water's commitment to water conservation.
  • July 11, 1981

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    Construction crews break ground on the Windy Gap Project.
  • 1985

    March 29, 1985

    The Subdistrict agrees to pay $10.2 million to the West Slope when plans for the Azure Project are scrapped. This supplemental agreement removes the last hurdle to the Windy Gap Project.
  • June 29, 1985

    Subdistrict officials dedicate the Windy Gap Project.
  • 1986

    1986

    The City of Thornton pays $55 million for 21,000 acres of farmland in Weld and Larimer counties. The city intends to transfer the farms’ irrigation water to Thornton via a 56-mile pipeline.
  • April 9, 1986

    Thornton makes public its plan to divert water from Northern Colorado.
  • June 1, 1986

    Northern Water assumes operation and maintenance responsibilities for C-BT collection facilities on the West Slope.
  • October 1986

    President Reagan signs legislation designating a large segment of the Cache la Poudre as Colorado's first wild and scenic river.
  • 1987

    Feb. 1, 1987

    Northern Waterassumes operation and maintenance responsibilities for Horsetooth Reservoir and Carter Lake. By 1987 Northern Water has 56 full-time employees; approximately half are employed in the Operations and Maintenance Branch.
  • Sept. 20, 1987

    Northern Water marks its 50th anniversary with a celebration at its headquarters in Loveland.
  • October 1987

    The Bureau of Reclamation announces a reorganization plan, shifting the 85-year-old agency's focus from project construction to water resources management.
  • 1988

    1988

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    Engineers raise Horsetooth’s four dams 3 to 8 feet in elevation from 1988 to 1989, increasing the reservoir's ability to store water from major flood events and addressing safety concerns.
  • 1989

    Feb. 6, 1989

    A Water Division No. 5 judge grants the Subdistrict absolute decrees to pump and store Windy Gap Project water.
  • 1991

    March 1991

    The Central Colorado Water Conservancy District imports the concept of children's water festivals to Colorado from Nebraska and hosts Colorado's first children's water festival.
  • June 3, 1991

    Northern Water begins offering C-BT Project water for seasonal rental. People line up as early as 2 a.m. to rent water.
  • June 14, 1991

    Northern Water and Subdistrict boards vote to include the City and County of Broomfield within Northern Water and Subdistrict boundaries.
  • July 1991

    Northern Water staff release the Northern Colorado Regional Water Supply Study, including information about projected future water demands.
  • 1991

    Northern Water begins preliminary design work on the Southern Water Supply Project pipeline to deliver C-BT and Windy Gap water from Carter Lake to cities and towns year-round.
  • 1992

    May 19, 1992

    Children's water festivals spread across Northern Colorado. Northern Water sponsors its first festival in Fort Collins.
  • October 1992

    The University Press of Colorado publishes "The Last Water Hole in the West," a history of Northern Water and C-BT Project. The book's author is Colorado State University historian Daniel Tyler.
  • 1993

    1993

    Northern Water expands its Irrigation Management Service to include a Turf and Urban Landscape Water Management and Conservation Program component. By 1993 municipalities own more than half of C-BT Project units.
  • November 1993

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    Construction begins on the Southern Water Supply Project pipeline from Carter Lake to Broomfield.
  • 1994

    1994

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    Northern Water converts the west lawn at its Loveland headquarters into a turf demonstration site to study bluegrass lawn maintenance and methods to use less fertilizer and water.
  • June 18, 1994

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    Officials rename the Granby Pump Plant in honor of the Farrs, a prominent Weld County farm and ranching family.
  • 1995

    Dec. 13, 1995

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    A rare sequence of events triggers an explosion at the Flatiron Power Plant’s Unit No. 3. Reclamation must repair the unit before it can pump water to Carter Lake.
  • 1996

    May 1, 1996

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    The Subdistrict and dignitaries dedicate and open the Windy Gap Watchable Wildlife Area for public use at Windy Gap Reservoir near Granby.
  • July 16, 1996

    Crews install the last segment of the Fort Lupton-Hudson pipeline, completing the second phase of the Southern Water Supply Project.
  • 1996

    Following repairs, Reclamation personnel test and ready the Flatiron Pump Plant Unit No.3.
  • 1997

    Feb. 7, 1997

    Northern Water and Municipal Subdistrict boards vote to include the City of Louisville within Northern Water and Municipal Subdistrict boundaries.
  • Sept. 1, 1997

    Engineers begin designing a third phase of the Southern Water Supply Project pipeline, a 42-mile segment from Platteville to Fort Morgan.
  • November 1997

    Northern Water purchases 35 acres on the north side of Berthoud to consolidate all East Slope employees, facilities and activities at a new headquarters site.
  • 1998

    April 1, 1998

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    Northern Water's Irrigation Management Service installs a drip irrigation system in a cornfield at the Thompson Valley Young Farmer Education Farm.
  • August 1998

    Pleasant Valley Pipeline participants settle on a project design. The reversible pipeline will benefit Larimer and Weld county residents.
  • October 1998

    Crews begin constructing a bypass flow structure at the Flatiron Power Plant. The bypass will enable water to bypass Flatiron in the event of a plant failure. The plant produces hydropower and also pumps water 300 vertical feet to Carter Lake.
  • December 1998

    Construction of the Flatiron bypass structure is complete.
  • 1999

    1999

    Windy Gap Project participants and the Subdistrict consider several potential reservoir sites on both the East and West slopes to store Windy Gap Project water from 1999 to 2000. This effort becomes known as the Windy Gap Firming Project, an effort to firm the relatively junior Windy Gap Project water rights and provide storage independent of the C-BT Project.
  • September 1999

    Crews finish work on the Southern Water Supply Project pipeline’s final 42 miles from Platteville to Fort Morgan.
  • 2000

    2000

    Sustained drought hits northeastern Colorado until 2006, resulting in agricultural water shortages and municipal water use restrictions.
  • January 2000

    Northern War and Reclamation unveil plans to modernize Horsetooth Reservoir’s four 50-year-old dams to make the structures more earthquake resistant and reduce seepage.
  • April 2000

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    Windy Gap participants, the Subdistrict and Northern Water discuss increasing the Southern Water Supply Project pipeline’s capacity via installation of pumps.
  • April 2000

    Northern Water and Colorado Division of Wildlife officials agree to construct additional game ramps in several C-BT Project canals. The ramps enable stranded wildlife to exit the canals safely.
  • June 13, 2000

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    The Bobcat Gulch fire ignites north of Drake and west of the Hansen Feeder Canal. The fire scorches approximately 10,600 acres. Northern Water and other agencies cooperate to minimize erosion and excessive runoff from the burned area.
  • July 14, 2000

    The Northern Water Board approves a contract with RB+B Architects, Inc. to design new headquarters facilities in Berthoud.
  • Oct. 27, 2000

    President Clinton signs legislation authorizing title transfer of four C-BT Project facilities from the U.S. government to Northern Water. All are located downstream of Horsetooth Reservoir and include the North Poudre (Munroe Gravity) and Charles Hansen supply canals, the Windsor Extension and the Dixon Feeder Canal.
  • December 2000

    Northern Water and Reclamation sign C-BT Project Supplemental Contract No. 7 to modernize Horsetooth Reservoir’s four 50-year-old dams.
  • 2001

    February 2001

    The Bureau of Reclamation contracts with Delhur Industries to modernize Horsetooth Reservoir’s four dams.
  • 2002

    April 2002

    The Northern Water Board approves a contract with FCI Constructors, Inc. for the new Berthoud headquarters facilities.
  • June 17, 2002

    The Bureau of Reclamation marks its 100th anniversary with a celebration at Hoover Dam on the Colorado River near Las Vegas, Nevada.
  • August 2002

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    A contractor repaints the Big Thompson Siphon, the structure’s first new coat of paint since it was replaced following the 1976 Big Thompson flood. The new color: sweetwood brown.
  • October 2002

    The Northern Water Board moves its initial quota declaration to October, establishing winter-time water delivery accounts and allowing water users to transfer water before the traditional quota declaration each April.
  • December 2002

    Northern Water makes its final payment to the federal government, fulfilling its financial obligations under the original C-BT Project Repayment Contract and the C-BT Project Supplemental Contract No. 2. Northern Water continues to repay its portion of Horsetooth Modernization Project costs under C-BT Project Supplemental Contract No. 7.
  • 2003

    January 2003

    Northern Water begins investigating water project alternatives within the South Platte, St. Vrain, Big Thompson and Cache la Poudre watersheds for a potential Northern Integrated Supply Project.
  • April 2003

    The Subdistrict pumps a record-setting 64,200 acre-feet of Windy Gap Project water to Lake Granby.
  • Sept. 2, 2003

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    After more than 49 years in west Loveland, Northern Water moves to its new facility in Berthoud. The District has 104 full-time employees; 84 in Berthoud and 20 at the Farr Pump Plant on Lake Granby.
  • October 2003

    After more than two-and-a-half years of work the Horsetooth Modernization project is complete. The same month work begins on the 8.5-mile Pleasant Valley Pipeline.
  • 2004

    Feb. 13, 2004

    Northern Water and Subdistrict boards vote to include the City of Lafayette within Northern Water and Subdistrict boundaries.
  • March 2004

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    Crews finish constructing the Pleasant Valley Pipeline between Horsetooth Reservoir and the Poudre River. It is designed to flow by gravity in each direction without the need for pumps, associated infrastructure or power costs.
  • April 2004

    Northern Water expands its water quality monitoring program, a multi-agency effort to monitor and maintain the C-BT Project’s supply of high-quality water.
  • August 2004

    The Northern Water Board adopts new Carryover Program rules and a Carryover Capacity Transferability Program to more flexibly manage C-BT Project water supplies.
  • September 2004

    Northern Water implements online accounting, providing secure online access to C-BT Project allottees’ water accounts via the Northern Water website.
  • 2005

    March 2005

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    The Subdistrict completes Windy Gap Project pipeline repairs and installs a cathodic protection system to minimize future repairs and extend the pipeline’s useable life span. Northern Water reconstructs the bifurcation structure on the Hansen Supply Canal and Windsor Extension at the Poudre River north of Horsetooth Reservoir.
  • May 2005

    Northern Water begins preliminary design work on a second Southern Water Supply Project pipeline from Carter Lake to cities within Northern Water and Subdistrict boundaries.
  • October 2005

    The Northern Water Board adopts a Regional Pool Program to increase water management flexibility and help preserve a portion of C-BT Project water supplies for irrigated agriculture.
  • November 2005

    The Northern Water Board signs agreements with the Bureau of Reclamation and URS Corporation to design a second outlet structure at Carter Lake.
  • 2006

    March 2006

    Northern Water relocates a section of the St. Vrain Supply Canal upstream of the Little Thompson Siphon due to unstable geology. The canal is back in operation and carrying water by early April.
  • July 31, 2006

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    Northern Water dedicates its Outdoor Laboratory for Landscape and Irrigation Education (OLLIE) and marks the 30th anniversary of the 1976 Big Thompson flood. OLLIE, a 2.5-acre site dedicated to turf, soil, irrigation and planting experiments, is part of Northern Water's Turf and Urban Landscape Water Management & Conservation Program. In 2007 OLLIE is renamed The Conservation Gardens at Northern Water.
  • Oct. 15, 2006

    Northern Water staff begin lowering the water level in Shadow Mountain Reservoir 12 vertical feet to kill aquatic weeds by exposing them to freezing temperatures for approximately five weeks. The reservoir’s location and lack of depth make it fertile ground for aquatic weed growth.
  • 2007

    April 2007

    The Northern Water Board endorses staff’s recommendation to use “Northern Water” as an abbreviated reference for “Northern Colorado Water Conservancy District” to facilitate name recognition. Previously the organization was known by multiple references, including The District, Northern, The Northern District, The Water District, NCWCD and others.
  • October 2007

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    Northern Water constructs a new outlet at Carter Lake. Completed in March 2008, the project includes a three-tiered intake tower, an 800-foot-long tunnel and several hundred feet of pipeline. The additional outlet supplements rather than replaces the original outlet structure.
  • 2008

    January 2008

    The Northern Water Board adopts a new logo to replace the organization’s existing 20-year-old logo.
  • July 2008

    Reclamation confirms the presence of quagga mussels in Lake Granby. Quagga mussels are an invasive species similar to zebra mussels. Both types of mussels drive out native species, block industrial pipes and can clog boat motors.
  • 2009

    April 2009

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    Northern Water crews finish installing an automated trash rack on the St. Vrain Supply Canal near Lyons to lift tumbleweeds and other debris from the canal.
  • 2010

    March 2010

    The Northern Water Board allocates 10,000 acre-feet of C-BT Project water from the Regional Pool; water users bid on and lease the entire amount. Adopted by the Board in 2005, the Regional Pool Program provides greater flexibility and to preserve some C-BT water supplies for irrigated agriculture.
  • July 2010

    The Northern Water Board allocates an additional 15,000 acre-feet of C-BT Project water from the Regional Pool; water users bid on and lease only 1,030 acre-feet due to plentiful supplies.
  • October 2010

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    Northern Water rehabilitates the connecting channel structure between Grand Lake and Shadow Mountain Reservoir. Built in the mid-1940s, the structure helps control surface levels in both water bodies.
  • 2011

    February 2011

    The Northern Water Board approves construction of a hydroelectric power plant at Carter Lake. When complete the project will generate enough electricity to power a town of approximately 5,000 people.
  • 2012

    May 31, 2012

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    Northern Water dedicates the Robert V. Trout Hydropower Plant at Carter Lake. Named for Bob Trout, Northern Water’s legal counsel for more than 35 years, the $6-million project includes two 1,300 kilowatt Francis turbines with a projected output of 7 to 10 million kilowatt-hours per year, enough to power about 1,000 homes.
  • June 9, 2012

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    The High Park Fire is detected west of Fort Collins. Caused by a lightning strike, the fire burned over 87,284 acres, destroyed 259 homes and negatively impacted water quality in the Cache la Poudre River. By land area the High Park Fire was the second-largest in Colorado history.
  • Sept. 20, 2012

    Northern Water marks its 75th anniversary with a celebration at its headquarters in Berthoud.
  • 2013

    July 2013

    Northern Water signs a water lease agreement with the city of Grand Junction to provide more than 5,400 acre-feet of water for municipal and recreational use in Grand Junction through releases out of Lake Granby down the Colorado River. This agreement helps fulfill a commitment under the Upper Colorado River Endangered Fish Recovery Program for additional water in a 15 Mile Reach of the Colorado River above Grand Junction.
  • September 2013

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    Beginning on September 9, 2013, a slow-moving cold front stalls over Colorado and clashes with warm humid monsoonal air from the south, resulting in heavy rain and catastrophic flooding along Colorado's Front Range. The situation intensifies on September 11 and 12, when rainfall totals exceed 20 inches in parts of Boulder County, leading to flash flooding, loss of life and property destruction (including C-BT Project infrastructure).
  • November 2013

    Northern Water completes a multi-year effort to rehabilitate the original Carter Lake outlet structure. Constructed in the mid-1950s, the original outlet was intended for large-volume water deliveries only during the irrigation season. Year-round water deliveries to cities and towns severely limited Northern Water’s ability to repair the aging structure until a new outlet at Carter Lake was finished in March 2008.
  • 2014

    March 11, 2014

    Northern Water Directors initially approve the construction of a hydropower plant at the outlet of Granby Dam on Lake Granby in Grand County (Granby Hydropower Project).
  • October 2014

    Water storage levels in the C-BT Project reach an all-time high; more than 200,000 acre-feet above average and 20 percent greater than the previous record set in 1997.
  • Dec. 19, 2014

    Following years of effort, the U.S. Bureau of Reclamation, Northern Water and its Municipal Subdistrict sign a new Windy Gap carriage contract. Simultaneously, Reclamation issues a Record of Decision enabling the Windy Gap Firming Project to proceed towards design and construction of Chimney Hollow Reservoir west of Carter Lake. At the same Board meeting, Northern Water Directors approve several financial agreements to proceed with the Granby Hydropower Project at Lake Granby.
  • 2015

    March 13, 2015

    The Northern Water Board approves a contract with Aslan Construction for the Granby Hydropower Project at Lake Granby. When operating at capacity the hydropower facility at Granby Dam will provide approximately 50 percent of the current capacity of the Trout Hydropower Plant at Carter Lake.
  • May 2015

    During late April and May, much of Northeastern Colorado receives approximately 200-300 percent of normal precipitation, leading to localized flooding.
  • 2016

    June 3, 2016

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    Northern Water dedicates the Granby Hydropower Plant at the base of Granby Dam. The $5.1-million project includes two 600 kilowatt Francis turbines with a projected output of 5 million kilowatt-hours per year, enough to power about 370 homes.
  • 2017

    May 16, 2017

    The U.S. Army Corps of Engineers issues a Record of Decision enabling the Subdistrict to proceed with construction of Chimney Hollow Reservoir, the key component of the Windy Gap Firming Project.
  • 2018

    May 2018

    Construction begins on a second Southern Water Supply Project pipeline (SWSP II) from Carter Lake. The $44 million pipeline parallels the first SWSP pipeline from Carter Lake to the west side of Longmont. From there the new pipeline will head southwest to serve both the Left Hand Water District and the City of Boulder’s water filtration plant at Boulder Reservoir.
  • 2020

    January 2020

    The Water Quality Control Division of the Colorado Department of Public Health and Environment issues the Northern Integrated Supply Project the Colorado 401 Water Quality Certification.
  • July 15, 2020

    The Larimer County Planning Commission recommends approval of a county 1041 permit for the Northern Integrated Supply Project to the Board of County Commissioners, which ultimately will decide whether to issue a permit.
  • Sept. 2, 2020

    The Northern Integrated Supply Project achieved an important milestone with the Larimer County Board of County Commissioners approving the 1041 Land Use Permit application.
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