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^ Likely causes of fine water level responses observed iln the lnydrographs Have been presented <br />in this TM. If more detailed explanations are desired, the local aquifer impacts including <br />pumping, recharge, stream flow, etc., near the given well should be evaluated. This could be <br />done by attempting to gather additional data around each well in question through field <br />work and interviews with local residents, or by conducting model simulations with the Task <br />48 model after it is calibrated. <br />^ Install data loggers in additional monitoring wells, particularly bedrock wells, to improve <br />the understanding of both seasonal and annual water level patterns in tlne study area. <br />Consider for monitoring purposes the use of bedrock wells that are proposed to be <br />abandoned and plugged, as was investigated wader Task 40. <br />^ Evaluate the goals of the DWR bi-annual measurement program. If the goal is to collect <br />water level measurements dur>ing times of the year when irrigation and pumping activity are <br />at a nninimum, then measurements should be conducted from approximately November to <br />February. If the goal is to capture tlne minimum or maximum water level during the growing <br />season, measurements should be collected using data loggers. <br />^ The Task 48 alluvial growndwater modeling calibration should take into accownt the <br />potential inaccuracy of water level elevations from wells without surveyed data for the <br />measuring point elevation. <br />^ The measuring point elevations of the DWR alluvial monitoring wells not surveyed under <br />this task should be surveyed at a later time to improve the accuracy of the groundwater level <br />elevation data. <br />7.0 References <br />Colorado Department of Natural Pesources, Division of Water Pesources (DWP). 1985. Pules <br />and Reb lations Applyiing Exclusively to the Withdrawal of Ground Water from the Dawson, <br />Denver, Arapahoe, and Larannie-Fox Hills Aquifers iln the Denver Basin (Denver Basin Rules). <br />SPDSS Phase 4 Task 39 Technical Memorandum-Final 24 <br />O~i20%2008 <br />