Streamflow and water quality characteristics for the upper Snake River and Deer Creek catchments in Summit County, Colorado: Water Years 1980 to 1990 This data table is provided as a supplement to INSTAAR occasional paper no. 53, 1999, by Elizabeth W. Boyer et al. The data are in tab-delimited ascii text format. Table 5. Peak discharge values at Snake River near Montezuma, Colorado USGS station number 09047500; discharge values in cubic feet per second (cfs). peak daily average = annual maximum value from USGS daily average streamflow values, which are tabulated in Table 3. peak inst. value = annual maximum instantaneous streamflow value. peak peak peak peak daily daily inst. inst. average average value value Year date Q date Q 1980 12-Jun 576 11-Jun 680 1981 09-Jun 247 07-Jun 326 1982 29-Jun 454 28-Jun 515 1983 20-Jun 622 21-Jun 760 1984 15-Jun 444 15-Jun 543 1985 08-Jun 542 08-Jun 700 1986 08-Jun 463 19-Jun 607 1987 10-Jun 346 09-Jun 388 1988 10-Jun 449 09-Jun 555 1989 30-May 342 29-May 409 1990 11-Jun 443 08-Jun 572