https://www.usgs.gov/media/images/relation-between-gravity-and-water-level-and-estimate-specific-yiel
Graphs showing A, relation between gravity and water level in an unconfied aquifer and B, estimae of specific yield.
water levelrelationgravityestimatespecific
https://www.usgs.gov/publications/principal-facts-a-gravity-survey-made-northeastern-oklahoma-and-southeastern-kansas
Observed gravity values, station locations, elevations, theoretical gravity, and free-air anomaly values are provided in tabular form for 554 gravity locations...
for agravity surveymade innortheastern oklahomaprincipal