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

The Upper San Juan 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 66,189 acres
Percent of basin mapped as wetlands 2%


Wetland Area by Type (acres)

Freshwater Herbaceous32,77650%
Freshwater Shrub 4,8037%
Freshwater Forested 99< 1%
Ponds 13,57321%
Lakes 9,58414%
Rivers 4,8657%
Other 490< 1%

Wetland Area Mapped with Modifiers (acres)

Excavated 2,4354%
Dammed 12,91020%
Ditched/Drained 1< 1%
Farmed 0None
Modified by Beaver 1,2022%




[+] Wetland Landscape Stressors



Weltand Area by Stressor Class (acres)

No Stress524,17414%
Low Stress1,270,98734%
Moderate Stress626,80517%
High Stress575,37816%
Severe Stress713,63819%




[+] Major River Basin Geography and Land Ownership


Total Area and Elevation Range

Total Area 3,710,984 acres 15,018 sq km
Maximum elevation 14,150 ft 4,314 m
Minimum elevation 4,595 ft 1,401 m
Average elevation 7,928 ft 2,417 m


Land Ownership (acres)

Total Federal Lands 1,665,773 45%
 Bureau of Land Management288,9878%
 National Park Service54,1071%
  Total Forest Service Lands 1,322,678 36%
  Grand Mesa, Uncompahgre, and Gunnison National Forests145< 1%
  Rio Grande National Forest1,683< 1%
  San Juan National Forest1,320,85036%
Total State 37,178 1%
 Colorado Division of Wildlife13,863< 1%
 Colorado State Land Board23,315< 1%
City, County, and Other Local Government Lands 939 < 1%
Land Trusts and Non-Governmental Organizations 0 None
Tribal Lands 770,204 21%
Private Lands 1,236,890 33%


Ecoregions (acres)

20: Colorado Plateaus 1,706,11046%
 20a: Monticello-Cortez Uplands575,90616%
 20b: Shale Deserts and Sedimentary Basins189,2275%
 20c: Semiarid Benchlands and Canyonlands904,09724%
 20d: Arid Canyonlands36,880< 1%
21: Southern Rockies 2,004,87454%
 21a: Alpine Zone281,1028%
 21b: Crystalline Subalpine Forests140,9784%
 21c: Crystalline Mid-Elevation Forests26,362< 1%
 21d: Foothill Shrublands17,699< 1%
 21e: Sedimentary Subalpine Forests403,02511%
 21f: Sedimentary Mid-Elevation Forests892,18124%
 21g: Volcanic Subalpine Forests243,5267%