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� <br />L4ST CREEK DEStGNATED GROUND WATER BASIN <br />2oos <br />. <br />� This report represents the results of water le�el measurements of wells in the Lost Creek <br />Designated Ground Water Basin during the month of February 2��8. The project was done in <br />cooperation with the Lost Creek Ground Water Management District and local well owners. <br />Funding for this pro�ect was supplied in part from well permit fees collected and managed by the <br />4ffice of the State Engineer as a result of the passage of Senate Bill 200 during the 1987 <br />legislative session. <br />Eighteen monitoring wells in the basin were measured on February 26, 2�08. These wells are all <br />part of an observation network that in at some wells dates back to the 1930's. However, <br />observatians for many of the wells didn't start until the 1950's and 1960's. Two wells were lost to <br />the monitvring network because new pumping equipment eliminated access to the well, or the <br />well was abandoned. Efforts are planned later in 2008 to identify replacement wells for the <br />network. <br />In 2008, all of the measured wells except three, S-12, N-6 and N-7, show water level declines over <br />the pre�ious year. The a�erage water ie�el for all wells in the basin declined 0.56 feet from 2007 <br />to 2008. This compares tv an average decline of 1.59 feet for the previous year. The average <br />decrease for the last five-year period was �.05 feet per year, and for the last ten-year period, a <br />decline of 0.86 feet per year. ��erall, the water level trend for the basin had been stabie or <br />increasing since the mid-1970's, but by and large re�ersed sharply around 2��0. Generally, north <br />� of Interstate 76, the water levels are within approximately 20 feet of the surface and with ground <br />� water in a few wells within fi�e feet of the surFace. Befin►een Highway 52 and Interstate 76, water <br />levels are between 25 feet and 45 feet of the surface. Water le�els south of Highway 52 range <br />� from 45 feet to over 110 feet below the ground surface. <br />A map is attached which shows the Iocativns of the monitoring wells in the Lost Creek Basin. This <br />year an additional map is attached which depicts the magnitude of water level changes from 2003 <br />to 2oos. <br />Tabular data in this report are presented for each well for the pre�ious 1 � years. Graphical data <br />are presented far the entire period of record. Information concerning bedrock wells for the Denver <br />Basin Aquifers will generally be a�ailable in June of each year and can be obtained from the <br />4fFice of the State Engineer. Complete tabular data for the Lost Creek Designated Ground Water <br />Basin are a�ailable by calling the Office of the State Engineer. <br />Copies of the report can be purchased from the Office of the State Engineer, Records Section, <br />1313 Sherman St., Room 821, Den�er, C� 8�2�3, {303) 866-3447. Additionally, this data may be <br />accessed on the internet at the Colorado Decision Support System website http:/lcdss.state.co.us <br />and can be exported to a number of different formats. <br />� <br />s <br />