This 1,450-mile-long river is joined in Utah by the Green & San Juan Rivers
[DOC] [TLE] UT GROW - Western Rivers Conservancy [PAR] The Green of Utah flows for nearly 400 miles with native fish habitat through .... 
and San Juan gather their flows from the high peaks of the Rockies in Wyoming 
or Colorado ... is the seventh-longest river in the U.S.1,450 miles from 
Colorado to the Gulf of .... and Stillwater before the Green joins the Colorado 
within the rock-.