Mapping > View Data Summaries (River Subbasin) > Upper Arkansas-John Martin Reservoir Profile

The Upper Arkansas-John Martin Reservoir Subbasin

Profile | PCAs | Tracked Elements | Reports


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


[+] Mapped Wetland Area



Wetland Mapping Summary

Area of mapped wetlands 56,686 acres
Percent of basin mapped as wetlands 2%


Wetland Area by Type (acres)

Freshwater Herbaceous19,64535%
Freshwater Shrub 13,25523%
Freshwater Forested 2,5394%
Ponds 1,6583%
Lakes 14,79626%
Rivers 3,9627%
Other 8321%

Wetland Area Mapped with Modifiers (acres)

Excavated 0< 1%
Dammed 0< 1%
Ditched/Drained 0< 1%
Farmed 0< 1%
Modified by Beaver 0< 1%




[+] Wetland Landscape Stressors



Weltand Area by Stressor Class (acres)

No Stress350,69114%
Low Stress978,71140%
Moderate Stress434,22918%
High Stress408,50017%
Severe Stress283,23112%




[+] River Subbasin Geography and Land Ownership


Total Area and Elevation Range

Total Area 2,455,340 acres 9,937 sq km
Maximum elevation 5,354 ft 1,632 m
Minimum elevation 3,252 ft 992 m
Average elevation 4,163 ft 1,269 m


Land Ownership (acres)

Total Federal Lands 33,520 1%
 Bureau of Land Management8,360< 1%
 Federal Land, Misc25,1591%
  Total Forest Service Lands 0 None
Total State 200,761 8%
 Colorado Division of Wildlife11,183< 1%
 Colorado State Land Board189,4868%
 Colorado State Parks93< 1%
City, County, and Other Local Government Lands 0 None
Land Trusts and Non-Governmental Organizations 0 None
Tribal Lands 0 None
Private Lands 2,221,059 90%


Ecoregions (acres)

25: High Plains 225,1939%
 25b: Rolling Sand Plains4,374< 1%
 25d: Flat to Rolling Plains220,8199%
26: Southwestern Tablelands 2,230,14791%
 26e: Piedmont Plains and Tablelands2,010,66982%
 26g: Purgatoire Hills and Canyons115,5575%
 26k: Sandsheets103,9204%