Mapping > View Data Summaries (Major River Basin) > Upper Arkansas Profile

The Upper Arkansas Basin

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To view mapped wetlands online, click one of the links below.


[+] Mapped Wetland Area



Wetland Mapping Summary

Area of mapped wetlands 323,647 acres
Percent of basin mapped as wetlands 2%


Wetland Area by Type (acres)

Freshwater Herbaceous137,65243%
Freshwater Shrub 58,49618%
Freshwater Forested 29,4749%
Ponds 17,9486%
Lakes 37,33212%
Rivers 33,14710%
Other 8,0342%

Wetland Area Mapped with Modifiers (acres)

Excavated 23,8437%
Dammed 15,8425%
Ditched/Drained 51< 1%
Farmed 1,606< 1%
Modified by Beaver 2,598< 1%




[+] Wetland Landscape Stressors



Weltand Area by Stressor Class (acres)

No Stress2,235,27112%
Low Stress7,799,67243%
Moderate Stress3,929,38622%
High Stress2,436,07613%
Severe Stress1,689,4139%




[+] Major River Basin Geography and Land Ownership


Total Area and Elevation Range

Total Area 18,089,831 acres 73,209 sq km
Maximum elevation 14,421 ft 4,397 m
Minimum elevation 3,252 ft 992 m
Average elevation 5,767 ft 1,758 m


Land Ownership (acres)

Total Federal Lands 2,738,469 15%
 Bureau of Land Management590,9993%
 Federal Land, Misc442,7202%
 Fish and Wildlife Service417< 1%
 National Park Service3,264< 1%
  Total Forest Service Lands 1,701,068 9%
  Grand Mesa, Uncompahgre, and Gunnison National Forests99< 1%
  Pike and San Isabel National Forests, Cimarron and Comanche National Grasslands1,700,7589%
  Rio Grande National Forest115< 1%
  White River National Forest96< 1%
Total State 1,498,046 8%
 Colorado Division of Wildlife107,379< 1%
 Colorado State Land Board1,387,3468%
 Colorado State Parks3,286< 1%
 State Land, Misc35< 1%
City, County, and Other Local Government Lands 47,997 < 1%
Land Trusts and Non-Governmental Organizations 7,137 < 1%
Tribal Lands 0 None
Private Lands 13,798,182 76%


Ecoregions (acres)

21: Southern Rockies 4,142,41223%
 21a: Alpine Zone307,0932%
 21b: Crystalline Subalpine Forests309,3132%
 21c: Crystalline Mid-Elevation Forests781,7694%
 21d: Foothill Shrublands1,224,1367%
 21e: Sedimentary Subalpine Forests291,7862%
 21f: Sedimentary Mid-Elevation Forests684,8274%
 21g: Volcanic Subalpine Forests97,050< 1%
 21h: Volcanic Mid-Elevation Forests100,752< 1%
 21i: Sagebrush Parks28,917< 1%
 21j: Grassland Parks316,7712%
25: High Plains 3,221,23918%
 25b: Rolling Sand Plains580,1943%
 25c: Moderate Relief Plains329,1612%
 25d: Flat to Rolling Plains2,311,88413%
26: Southwestern Tablelands 10,726,18059%
 26e: Piedmont Plains and Tablelands8,148,93245%
 26f: Mesa de Maya/Black Mesa367,8112%
 26g: Purgatoire Hills and Canyons666,0154%
 26h: Pinyon-Juniper Woodlands and Savannas637,8944%
 26i: Pine-Oak Woodlands45,209< 1%
 26j: Foothill Grasslands498,1393%
 26k: Sandsheets362,1802%