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Dan Mathews - 2 - November 2, 1999 <br />3) The DMG notes several gaps for the surface water gaging stations on Rapid Creek and <br />Cottonwood Creek. The DMG notes SWGS-Ol is missing data for three weeks in August <br />and the period November, 1996 through March 1997. Monitoring is not required when the <br />creek is frozen. Therefore, the data gap from November 1996 through March 1997 is <br />understandable. The only relevant missing data was for three weeks in August when the chart <br />rewrder malfunctioned because of sediment in the stilling basing. According to notes on the <br />chart for August 1997, the stilling basin was cleaned on 8/29/97. <br />Monitoring of SWGS 02, 03 and OS is required bimonthly for the period June through <br />October. The DMG notes missing data for October and November 1996 for SWGS-02. <br />October data was located for this site. I believe data missing for November in any year is <br />understandable. <br />Missing data was noted for June 1997, October 1996 and November 1996 for SWGS-03. <br />June and October data was located for this site. Missing November data is understandable. <br />Missing data was noted for October and November for SWGS-O5. October data and one <br />week of November data was located for this site. <br />Enclosed are new data pages SH-25 (SWGS-02), SI-25 (SWGS-03) and SK-11 (SWGS-OS) <br />which present monitoring data for the referenced monitoring stations for the 1997, 1998 and <br />1999 water years. <br />1997 Summarv <br />Very little data was actually missing for the 1997 AHR. SWGS-O1 had three weeks of missing data <br />in August 1997 because of a chart recorder malfunction. Some data was missing from all of the <br />stream gages for November which is understandable. <br />1998 AHR <br />1) SWGS-O1 is missing a significant amount of data for the year. The main problem with the <br />recorder for the year was the float filled with water during May. Evidently it took some time <br />for this to be discovered and repaired. It appears from notes on the charts the problem was <br />discovered in May or June and was not repaired until August 30, 1998. <br />Numerous data is noted as missing for SWGS-02, 03 and O5. New data pages SH-25, SI-25 <br />and SK-11 present the data which was located for the three gaging stations for the 1998 <br />water year. SWGS-02 and 03 are both missing data for July 1998. SWGS-OS is missing data <br />for one week in June and the two monitoring events in July. <br />2) Page 2 of the 1998 narrative was revised to convert flow depth measurements to flow in cubic <br />feet per sewnd. <br />