Colorado River Map showing major rivers in Colorado, River start and end point, county boundaries.
River Map of Colorado State

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Rivers and Waterways in Colorado
Colorado’s river systems begin high in the Rocky Mountains, where snowmelt feeds many of the major waterways across the western United States. Rivers in the state flow in multiple directions, with some draining west into the Colorado River system and eventually the Gulf of California, while others flow east toward the Mississippi River basin. Mountain streams dominate the landscape, especially in the central and western regions. Colorado also has numerous reservoirs and alpine lakes that are essential for water storage, irrigation, and supplying growing cities.
Major Rivers in Colorado
| River | Length (Approx.) | Region | Flows Into |
|---|---|---|---|
| Colorado River | 1,450 mi | West | Gulf of California |
| Arkansas River | 1,469 mi | Central | Mississippi River |
| Rio Grande | 1,896 mi | South | Gulf of Mexico |
| South Platte River | 439 mi | North | Missouri River |
| North Platte River | 716 mi | North | Missouri River |
| Gunnison River | 180 mi | West | Colorado River |
| Yampa River | 250 mi | Northwest | Green River |
| San Juan River | 383 mi | Southwest | Colorado River |
| Dolores River | 241 mi | Southwest | Colorado River |
| White River | 195 mi | Northwest | Green River |
| Animas River | 126 mi | Southwest | San Juan River |
| Poudre River | 126 mi | North | South Platte River |
| Blue River | 65 mi | Central | Colorado River |
| Eagle River | 60 mi | Central | Colorado River |
| Roaring Fork River | 70 mi | Central | Colorado River |
| Uncompahgre River | 75 mi | West | Gunnison River |
| Cache la Poudre River | 126 mi | North | South Platte River |
| Big Thompson River | 78 mi | North | South Platte River |
Major Lakes in Colorado
| Lake | Type | Region |
|---|---|---|
| Blue Mesa Reservoir | Reservoir | West |
| Lake Granby | Reservoir | North |
| Grand Lake | Natural lake | North |
| Shadow Mountain Lake | Reservoir | North |
| Horsetooth Reservoir | Reservoir | North |
| Eleven Mile Reservoir | Reservoir | Central |
| Chatfield Reservoir | Reservoir | Central |
| Turquoise Lake | Reservoir | Central |
| Twin Lakes | Natural lake | Central |
| Cherry Creek Reservoir | Reservoir | Central |
Major River Basins in Colorado
Colorado is divided between major river basins that send water west toward the Colorado River and east toward the Mississippi River system. These basins are crucial for water supply across the western United States, making Colorado a key headwaters state.
- Colorado River Basin
- Arkansas River Basin
- Rio Grande Basin
- South Platte River Basin
- North Platte River Basin
- Gunnison River Basin
- Yampa River Basin
- San Juan River Basin
- Dolores River Basin
Colorado Rivers Facts
| State | Colorado |
| Total Rivers & Streams | 158,000+ miles of streams |
| Major Rivers | Colorado, Arkansas, Rio Grande, Platte |
| Total Waterway Length | 160,000+ miles |
| Main Drainage | Colorado River & Mississippi River Systems |
| Longest River | Rio Grande |
| Shortest River | Blue River |
| Major River Basins | 9 Primary Basins |
| Primary Outlet | Gulf of California & Gulf of Mexico |
| Key Uses | Water supply, irrigation, recreation, hydroelectric power |
| Longest River Within State | Arkansas River |
| Number of River Basins | 8–10 Major Basins |
| Major Reservoirs | Blue Mesa, Lake Granby, Chatfield Reservoir |
| Primary Water Source | Snowmelt and mountain runoff |
River Maps of the 50 U.S. States – Click on a State to View Its River Map
- Alabama River Map
- Alaska River Map
- Arizona River Map
- Arkansas River Map
- California River Map
- Colorado River Map
- Connecticut River Map
- Delaware River Map
- Florida River Map
- Georgia River Map
- Hawaii River Map
- Idaho River Map
- Illinois River Map
- Indiana River Map
- Iowa River Map
- Kansas River Map
- Kentucky River Map
- Louisiana River Map
- Maine River Map
- Maryland River Map
- Massachusetts River Map
- Michigan River Map
- Minnesota River Map
- Mississippi River Map
- Missouri River Map
- Montana River Map
- Nebraska River Map
- Nevada River Map
- New Hampshire River Map
- New Jersey River Map
- New Mexico River Map
- New York River Map
- North Carolina River Map
- North Dakota River Map
- Ohio River Map
- Oklahoma River Map
- Oregon River Map
- Pennsylvania River Map
- Rhode Island River Map
- South Carolina River Map
- South Dakota River Map
- Tennessee River Map
- Texas River Map
- Utah River Map
- Vermont River Map
- Virginia River Map
- Washington River Map
- West Virginia River Map
- Wisconsin River Map
- Wyoming River Map
