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| Palo Verde Diversion Dam | |
|---|---|
| Name | Palo Verde Diversion Dam |
| Country | United States |
| State | Arizona |
| River | Colorado River |
| Locale | La Paz County |
| Purpose | Irrigation |
| Status | Operational |
| Opening | 1957 |
| Owner | United States Bureau of Reclamation |
| Type | Diversion dam |
| Height | 50 ft |
Palo Verde Diversion Dam
The Palo Verde Diversion Dam is a low concrete diversion structure on the Colorado River near Palo Verde, Arizona in La Paz County, Arizona. Built to support irrigation and water management for the Palo Verde Valley and adjoining agricultural districts, the dam ties into mid‑20th century water development projects associated with the Bureau of Reclamation and post‑war reclamation efforts. Its operation influences regional water delivery networks, riparian habitats, and cross‑border water diplomacy relating to the Colorado River Compact and related interstate compacts.
The dam sits upstream of the Imperial Dam and downstream of the Davis Dam, serving as a diversion point for the Palo Verde Irrigation District and nearby agrarian enterprises. Constructed during an era marked by projects like the Glen Canyon Dam and Hoover Dam, the facility is integral to the array of infrastructure managed by the United States Bureau of Reclamation and coordinated with agencies such as the United States Army Corps of Engineers and state water authorities of Arizona and California. It interacts with regional water allocation frameworks exemplified by the Law of the River and federal statutes including the Colorado River Storage Project Act.
Planning and authorization for the diversion structure occurred amid post‑World War II investment in western waterworks, influenced by legislators and officials connected to the Reclamation Act of 1902 legacy and contemporary programs under the Department of the Interior. Construction began in the 1950s with contractors experienced from projects like All-American Canal works and federally overseen river control measures. Engineers adapted techniques used at projects such as the Imperial Dam and incorporated lessons from flood control precedents including the 1936 Flood Control Act. Labor, materials, and logistics involved firms and unions active across southwestern projects, while funding and oversight involved committees of the United States Congress and regional authorities including the Central Arizona Water Conservation District.
The diversion structure is a concrete fixed‑crest and gated installation approximately 50 feet in structural height with intake works leading to lateral canals and headworks serving the Palo Verde Irrigation District. It includes radial gates and stoplog facilities similar in concept to those at the Imperial Dam and movable works used on channels feeding into the All-American Canal system. Design considerations reflected hydrologic data from the United States Geological Survey and engineering standards promulgated by the Bureau of Reclamation and influenced by sediment management experiences at Glen Canyon Dam. The project footprint interfaces with transportation corridors such as Interstate 10 and local county roads, and construction required coordination with utilities and entities like the Arizona Department of Transportation.
Operational control is exercised by the Palo Verde Irrigation District in coordination with the Bureau of Reclamation and state water agencies from Arizona and California. Seasonal releases align with crop cycles in the valley—notably cotton, alfalfa, and forage—reflecting commodity trends tracked by the United States Department of Agriculture and regional cooperatives. Flow management must account for allocations under the Colorado River Compact and adjustments tied to storage operations at upstream reservoirs like Lake Mead and Lake Powell. Maintenance, inspections, and emergency response protocols mirror practices employed at other diversion works such as the Imperial Diversion District facilities and are coordinated with flood control plans informed by the National Oceanic and Atmospheric Administration and the United States Army Corps of Engineers.
The diversion alters natural flow regimes of the Colorado River, affecting riparian corridors associated with species protections under frameworks comparable to the Endangered Species Act and habitat programs like the San Bernardino National Wildlife Refuge initiatives. Changes in sediment transport and seasonal inundation have implications for populations of native fish referenced in recovery efforts connected to the Lower Colorado River Multi‑Species Conservation Program and for bird communities that use wetlands managed by the California Department of Fish and Wildlife and Arizona Game and Fish Department. Mitigation and restoration projects in the basin have involved partnerships among federal agencies, tribal governments including Colorado River Indian Tribes, non‑governmental organizations such as The Nature Conservancy, and state conservation programs.
The dam and adjacent canals influence recreational boating, birdwatching, and angling that connect to visitor patterns at sites like the Cibola National Wildlife Refuge and Mittry Lake. Local cultural landscapes include agricultural heritage in the Palo Verde Valley and interactions with indigenous communities including tribes with historical ties to the Colorado River corridor, recognized in consultations similar to those for projects affecting tribal lands like the Fort Mojave Indian Tribe and Quechan Tribe. Interpretive opportunities and regional tourism tie into larger attractions such as Yuma, Arizona, the Salton Sea region, and historic cross‑border routes into Baja California.
Category:Dams on the Colorado River Category:Buildings and structures in La Paz County, Arizona Category:United States Bureau of Reclamation dams