How California Pumps Water Over a Mountain

Water doWater doesn’t always flow downhill. At California’s Edmonston Pumping Plant, enormous pumps lift it toward a crossing through the Tehachapi Mountains. Follow one possible journey through California’s State Water Project—from northern rivers and the Delta, along the California Aqueduct, through storage reservoirs and pumping plants, and into Southern California. We explain the climb, the difference between pipeline length and vertical lift, and how descending water can recover some energy. What California landmark or piece of infrastructure should we explain next? Tell us in the comments. CHAPTERS 0:00 Water over a mountain 0:34 One connected water system 1:03 Northern rivers and the Delta 1:22 Banks Pumping Plant 2:07 San Luis and O’Neill Forebay 2:50 Another lift at Dos Amigos 3:00 Toward Edmonston 3:40 Inside the big lift 4:14 Crossing the Tehachapis 4:38 Powering the climb 5:25 Southern California branches 5:50 Back to the highway VISUALS & CREDITS Photographs are historical; water levels vary. Diagrams are simplified and not to scale. The windshield scene is AI-generated illustration. The thumbnail is an AI-assisted adaptation of Tedder’s Edmonston photo, with reframing, color changes, text and an arrow; thumbnail licensed CC BY-SA 4.0. Photos are cropped/reframed for video. Source pages and licenses: Edmonston (video + thumbnail): Tedder, CC BY-SA 4.0. https://commons.wikimedia.org/wiki/Fi... Tehachapi wildflowers: Rennett Stowe, CC BY 2.0. https://commons.wikimedia.org/wiki/Fi... Sacramento River: Michael J. Nevins / USACE, Public domain. https://commons.wikimedia.org/wiki/Fi... Clifton Court Forebay: Pi.1415926535, CC BY-SA 4.0. https://commons.wikimedia.org/wiki/Fi... San Luis aerial: formulanone, CC BY-SA 2.0. https://commons.wikimedia.org/wiki/Fi... I-205 aqueduct crossing: Ian Kluft; edited by Jelson25, CC BY-SA 3.0. https://commons.wikimedia.org/wiki/Fi... Pipelines near Chrisman: PS Harris, CC BY-SA 3.0. https://commons.wikimedia.org/wiki/Fi... Pyramid Lake: tinyfroglet, CC BY 2.0. https://commons.wikimedia.org/wiki/Fi... Castaic Lake: Jason Ippolito, CC BY 2.0. https://commons.wikimedia.org/wiki/Fi... Silverwood Lake: Don Graham (inkknife_2000), CC BY-SA 2.0. https://commons.wikimedia.org/wiki/Fi... Lake Perris: Summit Hopper, CC BY 2.0. https://commons.wikimedia.org/wiki/Fi... Oroville Dam: California DWR, Public domain. https://commons.wikimedia.org/wiki/Fi... Aqueduct and orchards: Triddle, Public domain dedication. https://commons.wikimedia.org/wiki/Fi... San Luis/O’Neill satellite view: NASA Landsat / World Wind, Public domain. https://commons.wikimedia.org/wiki/Fi... Aqueduct / San Luis Canal aerial: formulanone, CC BY-SA 2.0. https://commons.wikimedia.org/wiki/Fi... I-5 and aqueduct aerial: Ken Lund, CC BY-SA 2.0. https://commons.wikimedia.org/wiki/Fi... Plant aerial imagery: USDA NAIP / USGS The National Map; labels added. https://imagery.nationalmap.gov/arcgi... LICENSE LINKS CC BY 2.0: https://creativecommons.org/licenses/... CC BY-SA 2.0: https://creativecommons.org/licenses/... CC BY-SA 3.0: https://creativecommons.org/licenses/... CC BY-SA 4.0: https://creativecommons.org/licenses/... Adapted BY-SA images are offered under their corresponding ShareAlike licenses. INFORMATION SOURCE California Department of Water Resources — State Water Project facilities: https://water.ca.gov/Programs/State-W... #CaliforniaAqueduct #California #WaterInfrastructure