Includes Illinois data for Sangamon River Forest Preserve, ISGS well CHAM-08-09B, ISGS well CHAM-08-09C, ISGS well CHAM-08-09A, ISGS well CHAM-08-09WT, and ISGS well CHAM-14-03B:

* This dataset contains barometric pressure observations collected from a pressure transducer hanging within one of the wells at the Sangamon River Forest Preserve site. This data is to be used to provide atmospheric pressure measurements to correct the pressure transducer measurements monitoring water levels in the observation wells at this site. Data should be parsed by calendar year.

* 171 foot well - This well was installed in 2008 to a depth of approximately 171 feet. The well is finished in a sand and gravel deposit. Information in this dataset will include water level observations from manual readings or transducers, as well as geologic descriptions, and other information related to the geology at the well or the construction of the observation well. Additional information may be saved that includes field notes or other metadata related to water well levels, data files, or other aspects of this well.

* 69 foot well - This well was installed in 2008 to a depth of approximately 69 feet. The well is finished in a sand and gravel deposit. Information in this dataset will include water level observations from manual readings or transducers, as well as geologic descriptions, and other information related to the geology at the well or the construction of the observation well. Additional information may be saved that includes field notes or other metadata related to water well levels, data files, or other aspects of this well.

* 260 ft well, ISGS well CHAM-08-09A) - This well was installed in 2008 at a depth of approximately 260 feet. The well is finished in a sand and gravel deposit. Information in this dataset will include water level observations from manual readings or transducers, as well as geologic descriptions, and other information related to the geology at the well or the construction of the observation well. Transducer data is intended to be parsed by calendar year. From 2011 through at least 2016, this well was included in the USGS Real-Time Groundwater Level Network for Illinois. All transducer data was collected by the USGS and has been downloaded and parsed. Additional information may be saved that includes field notes or other metadata related to water well levels, data files, or other aspects of this well.

* 21 foot well - This well was installed in 2008 to a depth of approximately 21.5 feet. The well is finished in a glacial diamicton (till). Information in this dataset will include water level observations from manual readings or transducers, as well as geologic descriptions, and other information related to the geology at the well or the construction of the observation well. Transducer data is intended to be parsed by calendar year. From 2011 through at least 2016, this well was included in the USGS Real-Time Groundwater Level Network for Illinois. All transducer data was collected by the USGS and has been downloaded and parsed. Additional information may be saved that includes field notes or other metadata related to water well levels, data files, or other aspects of this well.

* 12 foot well - This well was installed in 2014 to a depth of approximately 12 feet. The well is finished in a glacial diamicton (till). Information in this dataset will include water level observations from manual readings or transducers, as well as geologic descriptions, and other information related to the geology at the well or the construction of the observation well. Additional information may be saved that includes field notes or other metadata related to water well levels, data files, or other aspects of this well.