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_ 1996 Annual Hydrologic Report <br />• Page 2 <br />This Yeaz's mean daily flow values for the Cottonwood and Rapid Creek flumes are included on data <br />pages SG-21, SH-21, SI-21 and SK-7 and aze presented graphically on data pages SG-22, SH-22, <br />SI-22 and SK-8. As usual, the flow in these Creeks is lazgely controlled by the City of Palisade, <br />depending upon their need for domestic water. Also, irrigation water is diverted from the creeks by <br />private water right holders at various locations. Table 596-1 was prepazed to show the average <br />monthly flows during the primary irrigation season when low flow in the creeks is critical. Gaps <br />in information are due to problems with the recorder or flows below the minimum recording level <br />of the recorder. Minimum recording levels of the flumes aze listed at the bottom of Table S96-1. <br />~-- New this year are crest stage gages on Coal Canyon drainage and Jeny Creek. The sites were <br />located in late 1995 but the actual gages were not installed until August and September 1996 due to <br />access problems with BLM. SWGS-06 is located downstream on Coal Canyon neaz the proposed <br />CRDA-3 refuse pile. SWGS-07 is upstream on Coal Canyon neaz the south boundary line of the <br />permit azea. SWGS-08 is located downstream on Jeny Creek neaz our Unit Train Loadout. SWGS- <br />09 is located upstream on Jerry Creek below it's confluence with Spring Creek. These monitoring <br />locations have been added to the Hydrologic Monitoring Location Map. The sites aze monitored <br />approximately once a month and checked for instantaneous flow at the time of monitoring and peak <br />flow since the last time monitored. Access is sometimes restricted by weather, BLM restricts access <br />• when the roads aze muddy. Data taken during the Yeaz is listed on data pages SR-1 for Coal Canyon <br />and SS-1 for Jerry Creek. Eazly recordings were made on temporary stakes installed in the drainage <br />channels. <br />There were three seeps included in the hydrologic monitoring in 1995. The location of these seeps <br />aze shown on the Hydrologic Monitoring Map. They aze located adjacent to Coal Canyon drainage <br />and Jerry Creek. They are primarily evident by the white staining on the hillsides from evaporation <br />of the seeps. None of them flow to the creek channel but generally evaporate within a couple of <br />hundred feet of the source. Flow and field measurements aze taken on these sites in the spring of <br />each year. The results of monitoring today is shown on data page ST-1 <br />There was no dischazge from our CDPS dischazge points 005 thru 014 during the yeaz. These <br />outfalls cover sediment pond dischazges. Dischazge point 015 is permitted to allow pumping water <br />from the south end of the Roadside South Portal out the 2 West portals. Piping to this point has not <br />been installed yet and as a result there was no dischazge from this point during the Yeaz. <br />Dischazge point 001 is used as an overflow to a mine water system for the preparation plant. The <br />source of the water is primarily location 3 (seethe Mine Water section of this report) in the Roadside <br />South but can include flow from location 5. Flow from this site is not directly related to inflows and <br />is discussed in mote detail in the Mine Water section of this report. As with other winters, in order <br />to avoid freezing problems only enough water to supply the preparation plant was pumped from the <br />• mine. Data pages SD-10 and 11 show the results of weekly monitoring on this point. When the <br />river is extremely high, the river is higher than the conveyor tube under the highway and causes <br />