Type of Submission
Poster
Keywords
Water, wells, quarry, quarries
Proposal
The static water level of a well is the distance from ground level down to the water within the well during a stabilized period of no downhole activity. A local mining company has purchased approximately four hundred acres of land in Mad River Township, just north of Yellow Springs, Ohio. The primary purpose of this project was to determine the accuracy of the groundwater data used by the mining company's consultant when they produced a regional groundwater map. Water well driller's logs that indicated static groundwater levels were the source of much of the information used in creating the regional groundwater map in the consultant's report. The state of Ohio also has a series of groundwater maps that were derived from some of the same driller's logs. In this current study that lasted approximately half a year, static groundwater level measurements were taken at ten different wells in the area where the planned Phase II quarrying activity is to take place. Eleven different measurement events occurred over the half-year period. The measurements were made with an electric water level meter. The data was processed with Surfer software in order to determine the gradient and direction-of-flow of groundwater in the study area. A polynomial regression was run on the data to give the groundwater-surface a planar attitude for the area of study. The gradient was calculated to be 0.073% ft/ft with a west-northwest direction of flow. Previous data collected in 2018 from some of the same wells were examined in Surfer and it showed a gradient of 1.370% with a west-northwest flow direction. The process of comparing the new Surfer-derived maps which reflect accurate measurements, to the state of Ohio's and the consultant's groundwater maps is being done, but preliminarily it can be stated that there are definite inaccuracies with the state's and the consultant’s maps. Site-specific comparisons of the consultant's static water levels with the levels determined from this current study are being made.
Start Date
4-8-2020 1:00 PM
End Date
4-22-2020 6:00 PM
Creative Commons License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.
Publication Date
April 2020
Static Water Level Data from Well Drilling Logs in Proximity to a Proposed Quarry Site, Clark County, Ohio
The static water level of a well is the distance from ground level down to the water within the well during a stabilized period of no downhole activity. A local mining company has purchased approximately four hundred acres of land in Mad River Township, just north of Yellow Springs, Ohio. The primary purpose of this project was to determine the accuracy of the groundwater data used by the mining company's consultant when they produced a regional groundwater map. Water well driller's logs that indicated static groundwater levels were the source of much of the information used in creating the regional groundwater map in the consultant's report. The state of Ohio also has a series of groundwater maps that were derived from some of the same driller's logs. In this current study that lasted approximately half a year, static groundwater level measurements were taken at ten different wells in the area where the planned Phase II quarrying activity is to take place. Eleven different measurement events occurred over the half-year period. The measurements were made with an electric water level meter. The data was processed with Surfer software in order to determine the gradient and direction-of-flow of groundwater in the study area. A polynomial regression was run on the data to give the groundwater-surface a planar attitude for the area of study. The gradient was calculated to be 0.073% ft/ft with a west-northwest direction of flow. Previous data collected in 2018 from some of the same wells were examined in Surfer and it showed a gradient of 1.370% with a west-northwest flow direction. The process of comparing the new Surfer-derived maps which reflect accurate measurements, to the state of Ohio's and the consultant's groundwater maps is being done, but preliminarily it can be stated that there are definite inaccuracies with the state's and the consultant’s maps. Site-specific comparisons of the consultant's static water levels with the levels determined from this current study are being made.
