IDWR staff measures the "depth to water" in approximately 320 wells throughout Idaho. In addition, IDWR maintains several networks of wells with installed pressure transducers to provide near-continuous water level measurements. Measurements are collected and stored in data loggers for periodic download. As technology advances, IDWR continues to increase the number of instrumented wells and is equipping some wells with telemetry to provide real-time data reporting.
Measuring and monitoring ground water levels is a cooperative effort. In total, IDWR staff measure over 800 wells, the U.S. Bureau of Reclamation (USBR) measures 70 wells in the Eastern Snake River Plain, and the U.S. Geological Survey (USGS) Idaho National Laboratory Project Office measures about 200 wells. Combined, nearly 1,100 monitoring wells in Idaho are measured regularly.
Evaluating the Data
IDWR maintains a ground water level database which contains the data gathered by various sources including the measurements taken by IDWR staff, USGS, USBR, IDWR contractors, plus other public and private entities. IDWR analyzes the data to determine trends in regional ground water levels. These trends are used to: