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<br />18. DISTRIBUTION STATEMENT
<br />Available from the National Technical Inforrriation Service, Operations
<br />Division, Springfield, Virginia 22151.
<br />
<br />19. SECURITY CLASS
<br />(THIS REPORT)
<br />UNCLASSIFIED
<br />20. SECURITY CLASS
<br />(THIS PAGE)
<br />UNCLASSIFIED
<br />
<br />:rt. NO. OF PA GES
<br />
<br />159
<br />
<br />
<br />MS,230 (8-70)
<br />Bureau of Reclamation
<br />
<br />c
<br />
<br />EPORT STANDARD TITLE PAGE
<br />3. RECIPIENT'S CATALOG NO.
<br />
<br />1. REPORT NO.
<br />REC-ERC-76-19
<br />4. TITLE AND SUBTITLE
<br />
<br />~'R~ ~~_~:~~i~,'::~;~i~>v ~ ~. "
<br />~h :>:<"" ,..".::t::v~,=,.{ ;@ x~, ,.- 1:~:;~Y:~:'-~><"
<br />~~i~:vL"1<": <.' ~ "
<br />
<br />Effects of Impoundment on Water and Sediment in the
<br />Arkansas River at Plleblo Reservoir
<br />
<br />S. REPORT DATE
<br />May 1977
<br />
<br />6. PERFORMING ORGANIZATION CODE
<br />
<br />7. AUTHOR(S)
<br />
<br />8. PERFORMING ORGANIZATION
<br />REPORT NO.
<br />
<br />S. J. Herrmann and K. I. Mahan
<br />
<br />9. PERFORMING ORGANIZATION NAME AND ADDRESS
<br />
<br />10. WORK UNIT NO.
<br />
<br />University of Southern Colorado
<br />2200 N. Bonforte Boulevard
<br />Pueblo, Colorado 81001
<br />
<br />11. CONTRACT OR GRA NT NO.
<br />
<br />14-06-700-7716
<br />
<br />13. TYPE OF REPORT AND PERIOD
<br />COVERED
<br />
<br />12. SPONSORING AGENCY NAME AND ADDRESS
<br />
<br />July 1, 1974 - June 30, 1976
<br />
<br />Engineering and Research Center
<br />Bureau of Reclamation
<br />Denver, Colorado 80225
<br />
<br />14. SPONSORING AGENCY CODE
<br />
<br />IS. SUPPLEMENTARY NOTES
<br />
<br />16. ABSTRACT
<br />
<br />The water quality of Pueblo Reservoir was studied from June 1974 to March 1976. Generallimnological
<br />parameters included dissolved oxygen, conductivity, pH, turbidity, alkalinity, sulfate, temperature, hard-
<br />ness, chloride, total dissolved solids, and total suspended matter. Concentrations of the following ele-
<br />ments were also monitored monthly in both the,dissolved and suspended water fractions: Ag, Cu, Fe,
<br />Mn, Zn, Co, Pb, Cd, Hg, Li, Na, K, As, Ni, Mg, anc\Ca. Pre- and post-impoundment water quality condi-
<br />tions were compared. Pre- and post-impoundment sediments were also analyzed for K, Na, Ca, Mg, Li,
<br />Cu, Cd, Pb, Fe, Mn, Zn, and Mo, and compared. Interesting seasonal, surface, spatial, and depth trends
<br />were observed for most parameters. The most frequent seasonal tqmd for chemical parameters was that
<br />of classic high winter values (low discharge) and low summer values (high discharge). Trends for Fe, Mn,
<br />and Zn were interesting in that they did not follow classical expectations. The data tend to support the
<br />inference that the inlet sediments especially are being enriched with a number of trace metals (Fe, Mn,
<br />Zn, and perhaps Mg, Cu, Cd, and Pb). (22 ref)
<br />
<br />17. KEY WORDS AND DOCUMENT ANALYSIS
<br />a. DESCRIPTORS--; *water quality; water analysis; *Iimnology ; *trace elements; heavy metals; sus-
<br />pended solids; pre-impoundment; post-impoundment; multiple purpose reservoirs; sediment concen-
<br />tration ; chemical wastes; water pollution effects; sediment chemistry
<br />
<br />b. IDENTlF IER5-- ; Pueblo Reservoir, CO; Arkansas River
<br />
<br />c. COSATI Field/Group 06F
<br />
<br />COWRR: 0606
<br />
<br />22. PRICE
<br />
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