Dolores River

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DOLORES RIVER BASIN

DOLORES RIVER BASIN

Drainage Area: 

10,169 square miles.

 

Length:

The San Juan/Dolores Basin is located in the southwest corner of Colorado.Major tributaries include San Miguel River, Animas River, and La Plata River.

 

Largest cities/towns in the basin:

  • Durango (pop. 15,213)
  • Cortex (pop. 8,328)

 

Elevation:

 

Land use:

Agricultural, mining, recreation, tourism, retirement/second home

 

Storage-Major reservoirs:

  • McPhee Reservoir – 381,100 ac-ft
  • Vallecito Reservoir 129,700 ac-ft
  • Lemon Reservoir – 40,100 ac-ft

Major Exports from Basin:

  • San Juan Chama Project – 89,832 ac-ft (annual average diversion)

 

Sources: San Juan/Dolores River Facts and San Juan/Dolores/San Miguel Fact Sheet

Source: Colorado Geological Survey– Groundwater Atlas

 

 

Detailed Map


Source: Colorado Geological Survey - Groundwater Atlas

Source: Colorado Geological Survey - Groundwater Atlas

Federal Offices

EVENTS TIMELINE

  • 1902 RECLAMATION ACT
  • 1920 KINKAID ACT Starts the wheels turning for construction of Hoover Dam.
  • 1922 COLORADO RIVER COMPACT
  • 1922 STATE OF WYOMING - v - STATE OF CO
  • 1928 Boulder Canyon Project Act
  • 1931 Boulder Canyon Project Agreement
  • 1944 Mexican Water Treaty
  • 1948 Upper Colorado River Basin Compact
  • 1956 Colorado River Storage Project Act
  • 1962 Navajo Indian Irrigation Project
  • 1968 Colorado River Basin Project Act
  • 1974 Colorado River Basin Salinity Control Act
  • 2001 Colorado River Interim Surplus Guidelines
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