World Library  
Flag as Inappropriate
Email this Article

Grand Ditch

Article Id: WHEBN0025782336
Reproduction Date:

Title: Grand Ditch  
Author: World Heritage Encyclopedia
Language: English
Subject: Kawuneeche Valley, Course of the Colorado River, Interbasin transfer, Colorado River Board of California, Morelos Dam
Publisher: World Heritage Encyclopedia

Grand Ditch

Grand River Ditch
Grand Ditch is located in Colorado
Grand Ditch
Nearest city Grand Lake, Colorado
Area 460 acres (190 ha)
Built 1890
Governing body Federal
MPS Rocky Mountain National Park MRA (AD)
NRHP Reference # 76000218[1]
Added to NRHP September 29, 1976

The Grand Ditch, also known as the Grand River Ditch and originally known as the North Grand River Ditch, is a water diversion project in the Never Summer Mountains, in northern Colorado (United States). It is 14.3 miles (23.0 km) long, 20 feet (6.1 m) wide, and 3 feet (0.91 m) deep on average. Streams and creeks that flow from the highest peaks of the Never Summer Mountains are diverted into the ditch, which flows over the Continental Divide at La Poudre Pass at 10,175 feet (3,101 m), delivering the water into the Cache La Poudre River for eastern plains farmers. The ditch was started in 1890 and wasn't completed until 1936. The ditch diverts between 20 to 40% of the runoff from the Never Summer Mountains, and delivers an average of 20,000 acre feet (25,000,000 m3). It significantly impacts the ecology in the valley below[2] and the National Park Service has fought in court to reduce the amount of diverted water.


The Grand Ditch was built by the Larimer County Ditch Company, mostly by Japanese crews, working with hand tools and black powder. The first diverted water flowed east across La Poudre Pass on October 15, 1890. Water Supply and Storage Company took over ownership in 1891.[3] The ditch was extended every year, and reached three miles in 1894.[4]

After the creation of Rocky Mountain National Park, increasing demand for water led to the creation of Long Draw Reservoir, and the required land was taken away by Congress from the park in 1923. Long Draw reservoir opened in 1930. The Grand Ditch was then lengthened one more time—this also required an act of Congress since it was now in a national park—to 14.3 miles (23.0 km) in September 1936.[4]

In May 2003 a 100-foot section of the ditch breached about 2.4 miles (3.9 km) south of La Poudre Pass, causing the water to cascade down the slopes and into the Colorado River. The flood left a visible scar on the mountainside: 20,000 trees were downed and 47,600 cubic yards of debris ended up in the Lulu Creek and the headwaters of the Colorado River. The Water Supply and Storage Company reached a settlement to pay $9 million in damages to Rocky Mountain National Park.[5] Periodic overflows of the ditch, of which the 2003 flood was but one example, has left debris all over the western side of the valley; the eastern side is not affected.[6]

The Grand River Ditch was listed on the National Register of Historic Places on September 29, 1976.[1] It can be hiked starting from the Bowen/Baker Trailhead in Rocky Mountain National Park.[7]

See also


  1. ^ a b "National Register Information System". National Register of Historic Places.  
  2. ^ Effects of the Grand Ditch, National Park Services, 2004.
  3. ^ Water across the Divide, in High Country News, October 12, 2009,
  4. ^ a b Perry, Phyllis J. (2008). It Happened in Rocky Mountain National Park. Globe Pequot. pp. 35–37.  
  5. ^ Dickman, Pamela (23 March 2012). "RMNP to take comment on options for Grand Ditch restoration -". Loveland Reporter-Herald. Retrieved 6 July 2014. 
  6. ^ Wohl, Ellen (2014). Rivers in the Landscape: Science and Management. Wiley. p. 217.  
  7. ^ "Baker Gulch to the Grand Ditch: Stealing Water from the West". Walking Into Colorado's Past: 50 Front Range History Hikes. Big Earth. 2006. pp. 37–40.  

External links

  • Historic American Engineering Record (HAER) No. CO-32, "Grand Ditch, Baker Creek to LaPoudre Pass Creek, Grand Lake vicinity, Grand County, CO", 4 photos, 6 data pages, 1 photo caption page
  • Grand Ditch Breach Restoration Plan, Factsheet 2010
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.

Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.