{"id":4837,"date":"2026-10-13T15:00:16","date_gmt":"2026-10-13T23:00:16","guid":{"rendered":"https:\/\/klamathid.org\/home\/?page_id=4837"},"modified":"2026-10-13T15:10:56","modified_gmt":"2026-10-13T23:10:56","slug":"without-project-effects","status":"publish","type":"page","link":"https:\/\/klamathid.org\/home\/water\/without-project-effects\/","title":{"rendered":"Without Project Effects"},"content":{"rendered":"
\n\n

Pre-Project Klamath Lakes<\/h2>\n

How Upper and Lower Klamath Lakes would have behaved day by day from 1962 to 2026 without the federal Klamath Reclamation Project, using the adopted model. This is a what-if, not a forecast.<\/p>\n\n

\nOpen the animation \u2192<\/a>\nOpens in a new tab.<\/span>\n<\/p>\n\n

How to use it<\/h3>\n
    \n
  1. Press Dry year<\/b>, Median<\/b> or Wet year<\/b> to load one water year. A water year runs from 1 October to 30 September.<\/li>\n
  2. Press Play<\/b>. The lakes move day by day. Press Pause<\/b> to stop.<\/li>\n
  3. Drag the slider to jump to any day while paused.<\/li>\n
  4. Try the four Sensitivities<\/b> to see what each setting changes.<\/li>\n<\/ol>\n\n

    What each button does<\/h3>\n\n\n\n\n\n\n\n\n\n\n
    Button<\/th>\nWhat it does<\/th>\n<\/tr>\n<\/thead>\n
    Dry year<\/b>, Median<\/b>, Wet year<\/b><\/td>\nLoads one real year: 1992 (dry), 2016 (median) and 1999 (wet). These are examples chosen to show a range, not rankings.<\/td>\n<\/tr>\n
    Play<\/b> \/ Pause<\/b><\/td>\nRuns the selected year. One year takes about one minute, then repeats until you press Pause.<\/td>\n<\/tr>\n
    Featured years<\/b><\/td>\n1984<\/b>: the Keno peak after the wet 1983 year. 2026<\/b>: the peak snowpack year, 4.1 inches on 24 February.<\/td>\n<\/tr>\n
    Slider<\/b><\/td>\nMoves to any day in the water year. Use it while paused.<\/td>\n<\/tr>\n
    Sequential record<\/b> (menu)<\/td>\nPick any year from 1962 to 2026 to load it.<\/td>\n<\/tr>\n
    Play full record (65 years)<\/b><\/td>\nPlays 1962 through 2026 in order. The full run takes about 65 minutes. Both lakes carry their levels from one year to the next, so a dry year can affect the year after it. Press Pause<\/b> to stop. Press Play<\/b> afterward to repeat only the year on screen.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n

    The four Sensitivities<\/h3>\n

    Each button turns one model setting on or off. Green<\/b> means on. Pink<\/b> means off. A note under the buttons explains the change. The defaults are: Springs off, the other three on.<\/p>\n\n\n\n\n\n\n\n\n
    Button<\/th>\nDefault<\/th>\nWhat it changes<\/th>\n<\/tr>\n<\/thead>\n
    Springs reach Lower Klamath Lake (+100 cfs)<\/td>\nOff<\/td>\nAdds 100 cfs of spring flow to Lower Klamath Lake every day. It is off by default because these springs are diverted for agriculture upstream today, so they do not reach the lake.<\/td>\n<\/tr>\n
    Klamath Canal Co. w\/o Reclamation Project<\/td>\nOn<\/td>\nEstimates the pre-Project irrigation infrastructure in place or under development before the Klamath Reclamation Project was authorized on 15 May 1905. But for the Project, these improvements would have been made.<\/td>\n<\/tr>\n
    VBDC 50 cfs from Lower Klamath Lake<\/td>\nOn<\/td>\nVBDC is the Van Brimmer Ditch Company. The setting covers its 1883 irrigation development and takes 50 cfs out of Lower Klamath Lake from April to October. It does not include the Adams Ditch, which increased the company's capacity from Lower Klamath Lake in 1884.<\/td>\n<\/tr>\n
    Dike closing the Lost River Slough (1889\u20131890)<\/td>\nOn<\/td>\nKeeps the dike in place, so no water reaches the Lost River Slough. Turning it off reopens the Slough, which carries water toward Tule Lake in wet years.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n\n

    Reading the numbers<\/h3>\n
      \n
    • Inflow<\/b> (cfs): water flowing into Upper Klamath Lake that day.<\/li>\n
    • Upper lake<\/b> and Lower lake<\/b> (ft): how high each lake stands.<\/li>\n
    • Over Link River<\/b> (cfs): water moving from Upper Klamath Lake to Lower Klamath Lake.<\/li>\n
    • Over Keno<\/b> (cfs): water leaving Lower Klamath Lake into the Klamath River.<\/li>\n
    • To the air<\/b> (cfs): water lost to evaporation from the lakes.<\/li>\n<\/ul>\n

      The charts below the animation show how far Upper Klamath Lake rose or fell since 1 October, the flow over Keno through the year, and how often each flow level was reached.<\/p>\n\n

      Model: adopted K.I.D. routing. Open-water evaporation 3.65 ft\/yr, the observed Upper Klamath Lake scale, inside the 3.25\u20134.0 AF\/ac band in Reclamation TM ENV-2024-006 (DRAFT). Canal demand: USGS Water-Supply Paper 1315-B, p. 825. Pre-Project canals and the Van Brimmer Ditch Company: OAH Case 003, Corrected Partial Order of Determination, Findings 16\u201317 and Claim 321-6. Full sources are in the animation's Technical Description.<\/p>\n\n<\/div><\/div><\/div><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":3,"featured_media":1400,"parent":4734,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"100-width.php","meta":{"footnotes":""},"class_list":["post-4837","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"\nWithout Project Effects - Klamath Irrigation District<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/klamathid.org\/home\/water\/without-project-effects\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Without Project Effects - Klamath Irrigation District\" \/>\n<meta property=\"og:url\" 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