Description:The Aquifer-Specific Groundwater Temperature Maps of Missouri OFM-13-640-GS shows six maps that illustrate the measured groundwater temperatures and depths in the post-Paleozoic sediments (glacial till and Bootheel alluvium), Western Interior Plains Confining System, Ozark Confining Unit, St. Francois Confining Unit, St. Francois Aquifer and the Basement Confining Unit. The post-Paleozoic sediments comprise the Quaternary System, Cenozoic Erathem, Mesozoic Erathem and Cretaceous System. The Western Interior Plains Confining System comprises the Pennsylvanian System. The Ozark Confining Unit comprises the lower Mississippian Subsystem, from the Northview Shale to the Kinderhook Shale, Devonian System and Silurian System. The St. Francois Confining Unit comprises the Upper Cambrian Series, Elvins Group. The St. Francois Aquifer comprises the Lower Cambrian Series, from the Bonneterre Formation to the Lamotte Sandstone. The Basement Confining Unit comprises the Precambrian-age igneous rocks. Each well data point has a corresponding groundwater temperature and depth measurement, used to verify that the well water was originating from either aquifers or confining units. Groundwater temperature data was collected state-wide from public water supply districts and springs.These measurements were taken with a YSI conductivity meter that measures temperature. This data includes measurements from oil and gas geophysical logs, Plains CO2 Reduction (PCOR) partnership data, Shallow Carbon Sequestration Demonstration Project, and springs data gathered from Missouri Department of Natural Resources publications and files. Additional data was collected from U.S. Geological Survey publications. Temperature data accuracy reflects original data source.
The contours were generated in ArcView TM 10.0 using raster interpolation, within the 3D Analyst tools. The raster interpolation utilized the natural neighbor tool. Subsequent to generating the raster image, the raster surface tool was used to contour the data from the raster interpolation. Some manual editing was performed to ensure contour lines honor data points values and guarantee quality control. The contours are in degrees Fahrenheit and depict the temperature-at-depth for the corresponding aquifers and confining units. This data shows that the geothermal characteristics of Missouri support use of ground source heat pumps (GSHPs) that generally do not need to be drilled deeper than 1,000 feet. The use of geothermal GSHPs has the potential to reduce the reliance on fossil fuels for heating, ventilation, and cooling (HVAC). These systems are excellent economical alternatives to electric and fossil fuel powered HVAC systems.
This map was provided by the Missouri Department of Natural Resources, Division of Geology and Land Survey and made available for publication through the National Geothermal Data System.
Publication Date: Nov 20, 2013