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| Stagecoach Dam | |
|---|---|
| Name | Stagecoach Dam |
| Country | United States |
| State | Nevada |
| County | Lyon County |
| Location | near Stagecoach, Nevada |
| Coordinates | 39.1633°N 119.2700°W |
| Operator | Valley Corporation |
| Dam type | Earthfill |
| Height | 81 ft |
| Length | 1,100 ft |
| Reservoir | Stagecoach Reservoir |
| Capacity | 41,000 acre-feet |
| Catchment | 127 sq mi |
| Surface | 1,200 acres |
Stagecoach Dam is an earthen storage impoundment on a tributary in western Nevada, forming Stagecoach Reservoir. The facility supplies municipal water, irrigation storage, flood control, and recreational opportunities near the community of Stagecoach, Nevada. It plays a role in regional water transfers, inter-basin allocation, and outdoor tourism in Lyon County, Nevada and the greater Truckee Meadows region.
Stagecoach Dam is located in northeastern Lyon County, Nevada in the Pyramid Lake Paiute Tribe–adjacent watershed near the Sierra Nevada eastern slopes. The impoundment lies within the high desert environment of the Great Basin and is accessible from U.S. Route 395 and the Nevada State Route 341 corridor. The reservoir drains a watershed influenced by tributaries historically used by Washoe people and settlers during the California Gold Rush. Nearby landmarks include Mt. Rose, Pyramid Lake, the Truckee River basin, and the rural town of Dayton, Nevada.
Planning for storage works in the Stagecoach area emerged during mid-20th century western water development programs influenced by agencies such as the Bureau of Reclamation and state water authorities like the Nevada Division of Water Resources. Construction began under private and public partnerships in the late 20th century with engineering firms and contractors experienced in western dam projects. The project intersected with legal frameworks from the Truckee River Operating Agreement negotiations, commitments involving the Washoe Tribe of Nevada and California, and water-rights adjudications in Nevada state courts. Key milestones included environmental reviews under standards pioneered by entities like the United States Fish and Wildlife Service and consultations with the Nevada Department of Wildlife.
Stagecoach Dam is an earthfill embankment incorporating a clay core and zoned materials sourced from nearby borrow pits typical of projects by firms such as URS Corporation and CH2M Hill. The structure includes a gated spillway and outlet works sized to route probable maximum flood from the local drainage, modeled to standards used by the Federal Emergency Management Agency and the U.S. Army Corps of Engineers for hazard classification. Instrumentation packages often include piezometers, inclinometers, and seepage monitors similar to systems employed at Hoover Dam auxiliary installations. The reservoir, Stagecoach Reservoir, provides roughly 41,000 acre-feet of storage, with a surface area managed seasonally by the operator and regional water purveyors including municipal suppliers from Reno, Nevada and agricultural districts near Smith Valley, Nevada.
Operational responsibilities coordinate among local water companies, irrigation districts, and state agencies following compacts influenced by the Interstate Stream Commission and protocols similar to the Truckee River Operating Agreement. Releases are managed for irrigation deliveries to farms in Lyon County, municipal supply to growing suburbs in the Reno–Sparks metropolitan area, and downstream ecological flows for species protected by the Endangered Species Act, with monitoring by agencies like the Nevada Division of Environmental Protection. Water rights administration interacts with adjudicated claims overseen by the Second Judicial District Court in Nevada and technical support from universities such as the University of Nevada, Reno.
Stagecoach Reservoir altered local riparian and wet meadow habitats historically used by the Washoe people and native fauna like Lahontan cutthroat trout, Great Basin spadefoot toad, and migratory birds along the Pacific Flyway. Mitigation and restoration programs have been coordinated with the U.S. Fish and Wildlife Service, the Nevada Department of Wildlife, and conservation NGOs modeled after efforts led by groups such as the Sierra Club and the Nature Conservancy. Water-quality monitoring addresses nutrients, turbidity, and invasive species management, with protocols informed by research from the Desert Research Institute and regional hatchery practices akin to those at Dardenelles Hatchery.
Stagecoach Reservoir is a regional destination for boating, angling, camping, and birdwatching attracting visitors from Reno, Nevada, Carson City, and Washoe County. Facilities at the site support boating ramps, campgrounds, and trails comparable to amenities in Lake Tahoe environs, and recreation management involves agencies such as the Bureau of Land Management and local chambers of commerce. Annual events and outdoor guides promote fishing for stocked species, waterfowl hunting regulated by the Nevada Department of Wildlife, and eco-tourism tied to nearby public lands like the Toiyabe National Forest.
Dam safety programs follow standards recommended by the National Dam Safety Program and coordinate inspections by the Nevada Division of Water Resources and consultants experienced with structures overseen by the U.S. Army Corps of Engineers. Routine maintenance includes erosion control, spillway upkeep, and seepage remediation using techniques refined in projects at New Melones Dam and similar reservoirs. Historical incident responses have involved flood-response coordination with Lyon County Emergency Management and structural assessments after high runoff years, with emergency action planning modeled on templates from the Federal Emergency Management Agency.
Category:Dams in Nevada Category:Reservoirs in Nevada Category:Lyon County, Nevada