The San Juan River Conservation Opportunity Area (COA) encompasses 29,572 ha (73,074 ac) from Navajo Dam west to where the river crosses into Colorado near the Four Corners. Most (61.3%) of the COA is on tribal lands; 31.2% is privately-owned. It contains one Important Bird Area (B-Square Ranch) and two TNC conservation areas (Canyon of the Ancients, San Juan River). Only 1% is protected. Landcover includes eight native vegetation habitats plus open water, developed, and agricultural areas. Agricultural lands are the most abundant. Intermountain Dry Shrubland and Grassland (18%), Intermountain Saltbush Shrubland (15%), and Cliff, Scree, and Rock (10%) are the dominant native habitats. Perennial aquatic habitats include 185 km (115 mi) of warm water streams, 27 km (17 mi) of cold water streams, and 1.8 ha (4.4 ac) of warm water reservoirs.


Habitat Name Habitat Size in Hectares
Barren 24.75
Cliff, Scree & Rock Vegetation 3066.48
Developed & Urban 2888.46
Herbaceous Agricultural Vegetation 6151.23
Intermountain Arroyo Riparian Scrub 12.96
Intermountain Dry Shrubland & Grassland 5248.62
Intermountain Juniper Woodland 241.02
Intermountain Saltbush Shrubland 4437.09
Intermountain Tall Sagebrush Shrubland 0.63
Introduced Riparian Vegetation 1449.09
Introduced Annual Grassland 756.45
Open Water 2102.49
Quarries, Mines, Gravel Pits and Oil Wells 56.7
Rocky Mountain Montane Riparian Forest 1364.13
Warm & Cool Desert Alkali-Saline Wetland 1735.2

Species (SGCN)

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