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<br />CONTENTS
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<br />NATIONAL WATER.QUAlITY ASSESSMENT PROGRAM ...............,................,........,....,....,.........., IV
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<br />SUMMARY OF MAJQR FINDINGS """""""",..,....,""" "",..'"""" ".."""", ,""'" """.."," ,..,..,..'", "",'
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<br />Stream and fiver highlights ................................"................................. ............,.......................... 1
<br />Ground-water highlightS..................... ...............................,."... ....,.......... ...................,... .....,....... 2
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<br />INTRODUCTION TO THE UPPER COLORADO RIVER BASIN .............. ......,..,..'........................... 3
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<br />MAJOR FIN 01 NGS """",...."""""""..",..,.."""...."""""""""....""..","""""""',....,"""',..,""""""'" 6
<br />Urban Development IS a Water-Quality Issue Wlthm the Southern Rocky Mountains. ,............... 6
<br />NATIONAL PERSPECTIVE-Biological measures Indicate thaI urban sites In the UCOL
<br />are less degraded when compared 10 other urban sites nationally..................... ............. 8
<br />NATIONAL PERSPECTIVE-Radon concentrations in UCOL ground water were
<br />generally higher than olher areas of the Nation............................................................... 9
<br />The Quality of Streams and Rivers is Affected by Historical MIning ActivIties..,........ .................. 11
<br />NATIONAL PERSPECTIVE-Trace elements in streambed sediments of the UCOL
<br />were often greater than concentrations found at other sites nationally...........,......................... 12
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<br />Water-Quality Characteristics of Agricultural Areas ......................,."..,.......,............................. 15
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<br />NATIONAL PERSPECTIVE-Herbicides commonly detected in the UCOL were also
<br />commonly detected in other agricultural areas nationally......................................................... 17
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<br />NATIONAL PERSPECTIVE-Nitrogen concentrations at the UCOL agricultural sites
<br />were greater than concentrations for many agricultural sites nationwide....................... 18
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<br />NATIONAL PERSPECTIVE-Biological measures indicate that UCOL agricultural and
<br />Colorado Plateau mixed land use sites rank among the more degraded sites nationally,......... 19
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<br />STU DY UNIT DE SiGN,..""""""""",..."..",..,...."..""".."""......".., """,..",..'"",..,"',..,'" ,..".."...."", 21
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<br />GLOSSARy,....,......"..,..,.........., ......,......,....,..,....'.., ....,............,.., ......,......,............,....'......,.........., 23
<br />REFER E NCES """""""",....""""",..,..",..,..",..,..,..".."..,""",..," ,..""",..'",.."",..",,"""""',... ,.., 25
<br />APPENDIX-WATER.OUAlITY DATA FROM THE UPPER COLORADO RIVER BASIN IN A
<br />NATIONAL CONTEXT....,..,......,..,............"......,...., ,......',.....,....,........,........"...., "..,..........,....,......, 28
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