Arkansas - Upper Big Sandy Water Balance_Application

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Upper Big Sandy Water Balance Attachment 2 - Page 3 Task 2- Member Survey The second task involves collection of additional data through research and member surveys as described below. . Conduct a survey of members to determine if there are those willing to collect precipitation data, streamflow observations, and well measurements. Also, collect data during the survey on short-term pond water storage/stock watering (via recording of number of head of stock owned). . Obtain ground water level data from wells throughout the District (via cooperating District members), including data following storms. . Obtain precipitation data from multiple locations, including the eastern and western extents of the District and incorporate this data into the revised water balance. . Perform collation and analysis of the data. This work will be led by Mr. Martin with assistance from Ms. Radabaugh and Mr. Berg. Additionally, the District will facilitate communication between Martin and Wood through meetings and review of any materials to be sent to the members. There are no deliverables associated with this task, but project personnel will communicate with the District regarding progress and any issues that arise via meetings, conference calls, phone calls, and email. Task 3 -Water Balance The purpose of the project is to create a water balance that considers the inflows and outflows within the Basin to determine the sustainable yield of the alluvial water supply. Mr. Martin, Ms. Radabaugh, Mr. Berg, and Ms. Johnson will work together to accomplish the following subtasks which lead to the completion of the Basin water balance. . Update and revise the well database and well classification work started in 2004. . Revise alluvial aquifer extent and alluvial cross sections based on revised well classifications and the additional data collection. . Analyze the current or recent alluvial water levels and aquifer saturated thicknesses. . Compare all precipitation data and obtain additional data applicable to the entire Basin. . Conduct phreatophyte consumptive use analysis including electronic calculation in GIS of the estimated total area populated by phreatophytes. . Reevaluate the irrigation application rate utilizing parameters felt to be more appropriate to the practices in the field. . Conduct analyses and provide new estimates of hydraulic conductivity, transmissivity, specific yield, and recoverable volume in storage based on field data and on the application of published appropriate ranges of values. . Evaluate test hole and monitoring well data to develop a more reliable and refined cross- section of the Basin at the downstream end of the District and estimate the underflow leaving the District. . Develop recommendations for future geophysical data collection which may help the District in further defining the alluvial extent throughout the Basin. S:\694 - Upper Big Sandy Mgmt Dist\694.2 - AK Roundtable\Application\AK Scope.doc