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<br />0333
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<br />CONTENTS
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<br />Abstracl..........,...... ......, ................'.... ..........,......,........................ '............ ....,...... ..........,.............,.... ....... ......, ........ ............... 1
<br />Introduction, .....'.... ....... ........ '...... ....... ............ ....... ...........,....'... .......... ..,.....................' ......... ..... '............. ....,. ....................... I
<br />Purpose and scope ......, '...... ......... ......,.. ........ ....... ,....,....'....'.. ..'..., '... ............. ....... '..,..' ...... ..'....'..... '....,.. '........, '....,. '... 3
<br />Acknowledgments....... ....,.... ......' ......... ...... ..'...... ........'.... '....,.... ...... '..... ..,.... ........... ......,........ '...... ..........,......, .....,..... 3
<br />Description of the study area .........,...........................,'........'..........,'...............,........................,..'....'.....,....,......................" 3
<br />Types of water-qualilY data ....... ......, '....,..... ....,'. .........,......... ...... '....'...' ......,'. ...... .......', '.... ..........' ....' ..... '.... ......" '.. ...... ........ 4
<br />Methods of data collection and analysis .........,....................,....'............................,.........,....,...........,...........'............. 4
<br />Quality-assurance procedures ........... ......., ..............,.... ................." ........... .......... '....... ..... .......... .........'. ...... ....,......'... 7
<br />Results.., .......... .............. '..................... ....'....'......,........... ........'................. ......,.... ...........,...... ..,............ ......... ..'...... .............. 8
<br />References cited ..... .......... '................,. .......... '........................, ...., .............. ........,..... .............. ...... ..,....,..... '........ ........, ....','... 8
<br />Water-quality data .. ....... ........ ....... ....... ................... ...., ...... '.. '..... ............, '.. ............., ..........' ........... ...... ..... ............................ 9
<br />
<br />PLATE
<br />
<br />[In pockel]
<br />
<br />1. Map showing location of surface-water stations in the Arkansas River Basin of Colorado
<br />where water-quality data were collected between 1990 and 1993
<br />
<br />'''--..,
<br />
<br />FIGURE
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<br />], Map showing location of study area..........,....,.....................,...........................,........,.......................'..........,....'... 2
<br />
<br />TABLES
<br />
<br />1. Selected surface-waler stations in the Arkansas River Basin and water-quality constituents
<br />measured and analyzed between ]990 and 1993 ............................,.....,....,....,......................,..........'....'....'........... 5
<br />2-7, Onsite measurements and selected inorganic data for:
<br />2. Station 09061500. Columbine Ditch near Fremont Pass,...............................,............,........,....,..........,......... II
<br />3. Station 09062000. Ewing Ditch at Tennessee Pass ...............,....,..........'..........,......'........'..........'.................. 12
<br />4. Station 09062500. Wurtz Ditch near Tennessee Pass,....,....,......,...............................,....,............................., 13
<br />5. Station 392005106130501, East Fork Arkansas River below French Gulch. near Climax ...,.........,..........'.. 14
<br />6. Station 391937106200301, Tennessee Creek at Highway 24. near Leadville ..,......,....,....,....,....,....'............ ]5
<br />7. Station 07079200, Leadville Mine Drainage Tunnel at Leadville....,...............................................,........,.... 16
<br />8. Onsite measurements and bacteriological and selected inorganic data for station 1>70%\200,
<br />Arkansas River near Leadville........, '.., .... ......, '....., '....' ...., '....,...., '......... ......,... .....',..... ......,................... '....".., '...... 18
<br />9-15. Onsite measurements and selected inorganic data for:
<br />9. Station 07081800, California Gulch at Malta......,....,.........,..........,..........,...................,..,..,....,..............,....... 21
<br />10, Station 07082000. Lake Fork above Sugar Loaf Reservoir ......,.....,....,........,................................,.........,..... 23
<br />11. Station 09063700, Homestake Tunnel near Leadville..........,....,....,..........,..........,....,....,..........,....,............,.. 24
<br />12. Station 09077160, Charles H, Bousted Tunnel near Leadville...........,........................................................... 25
<br />13, Station 09077500, Busk-Ivanhoe Tunnel at Easl Portal, near Malta........,.........,..,.........,.............................. 26
<br />14. Stalion 07082500, Lake Fork below Sugar Loaf Reservoir ,..,.....,......'....,.........................,..........,.......,........ 27
<br />IS. Station 391226]06213201. Lake Fork above Halfmoon Creek, near Malta.......................,.........,.......,........ 28
<br />16. Onsite measurements and bacteriological and selected inorganic data for station 07083000,
<br />Halfmoon Creek near Malta... ............ .... .............. ..,..... ......,......, .........,.... '...., '.. ........,'.., ............'..... ........ ........,'..... 29
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<br />CONTENTS "'
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