Pine Canyon Dam

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Pine Canyon Dam

Project Data Report

Background

Pine Canyon Dam is an ungated flood control structure located within the Meadow Valley Wash Basin, in Lincoln County, Nevada. The drainage area behind the dam totals about 45 square miles. The dam site is located about 18 miles southeast of Caliente, Nevada, and about 100 miles northeast of Las Vegas, Nevada (location map). Along with Mathews Canyon Dam, the project provides protection to downstream areas along Clover Creek, Meadow Valley Wash, and lower Muddy River. These areas include the City of Caliente, 80 miles of the Union Pacific Railroad, farm land, and many miles of highways and roads. The dam was authorized by an act of Congress in 1950. Construction began in March 1957 and work was completed in December 1957.

Physical Data

PINE CANYON DAM AND RESERVOIR
LINCOLN COUNTY, NEVADA
PERTINENT DATA - June 2016
Project Purpose   Local Flood Protection  
Completion Date   December 1957  
Stream System    Clover Creek, Meadow Valley Wash, lower Muddy River Basin, Colorado River
Drainage Area     45 mi2  
Significant Upstream Flood Control Facilities   None  
DSAC Rating   4
Reservoir:
Elevation  NGVD 1929 +4.15 ft =  NAVD 1988
  Streambed at dam   5,598.0 ft 5,602.2
  Outlet Works Intake   5,604.0 ft 5,608.2
  Spillway crest   5,675.0 ft 5,679.2
  Revised PMF Spillway Surcharge Level2   5,688.5 ft 5,692.7
  Top of dam   5,690.0 ft 5,694.2
Area1      
  Spillway crest 254 acres  
  Revised PMF Spillway Surcharge Level2   353 acres  
  Top of dam   367 acres  
Capacity1, Gross      
  Spillway crest (includes sediment allowance)   7,840.0 af  
  Revised PMF Spillway Surcharge Level   11,439.2 af  
  Top of dam   11,060.0 af  
  Allowance for sediment (50-year)   1,400 af  
Dam Type: Earthfill    
  Height above streambed   92 ft  
  Crest length   884 ft  
  Crest width   20 ft  
  Revised PMF Spillway Surcharge Freeboard2   1.5 ft  
Spillway (rebuilt in 1994) Type: Excavated in left wall w/ Concrete Sill
  Crest Length   330 ft  
  Crest Elevation   5,675.0 ft 5,679.2
  Revised PMF Spillway Surcharge2   13.5 ft  
Outlet Conduit Type: Ungated
    Number and size   1 - 3.5 dia ft  
    Intake Sill Elevation   5,604.0 ft 5,608.2
    Length   479 ft  
    Maximum capacity at spillway crest   322 cfs  
Dike Type: Earthfill
    Top elevation   1 - 3.5 dia ft  
    Height above saddle   5,604.0 ft 5,608.2
    Top length   479 ft  
    Revised PMF Freeboard2   322 cfs  
Reservoir Design Flood        
    Duration (inflow)   2.5 days  
    Maximum water surface elevation   5,674.6 ft 5,678.8
    Total volume   7,300 af  
    Inflow, peak   10,500 cfs  
    Outflow, peak   321 cfs  
Spillway Design Flood ➜        
  Duration (Inflow)   1 days 1.25
  Total volume   5685.1 (5,689.3 NAVD) ft 5,688.5 (5,692.7 NAVD)
  Maximum water surface elevation   15,800 af 18,000
  Inflow peak   38,000 cfs 68,100
  Outflow peak   31,700 cfs 49,200
Historic Maximums   Date: 1/11/2005 (all)    
    Maximum water surface elevation   5,658.3 ft 5,662.5
    Maximum storage (54% Full)   4,200 af  
    Maximum 1-hr inflow   2,415 cfs  
    Maximum 1-hr outflow   285 cfs  
         
 
Reference: Design Memorandum No. 3, General Design for Pine Canyon Dam, July 1956
1. Based on Original October 1941 Survey [16 years prior to dam construction]
2. Interim Report on Hydrology and Hydraulic Review of Design Features of Existing Dams for Pine Canyon and Mathews Canyon Dams, July 1978
 
 

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