Model files and GIS data for risk assessment in the Cambrian-Ordovician sandstone aquifer system, Northeastern Illinois, predevelopment-2070

Using Production Well Behavior to Evaluate Risk in the Depleted Cambrian‐Ordovician Sandstone Aquifer System, Midwestern USA

“…For a complete description of model parameters, hydrostratigraphic units, and calibration to historic and current water levels, see . For SFZ fault core and damage zone zonation in the SWPG area, see Hadley et al (2020Hadley et al ( , 2021.…”

“…Development of the IGFM is documented in . The version of the IGFM used for this risk assessment study, as well as raster outputs of drawdown and available head, are publicly available through a data release (Hadley et al, 2021) via the following DOI link: https://doi.org/10.13012/B2IDB-4350211_V1.…”

“…Multi-aquifer wells throughout the model domain are simulated with high K v zones in the aquitards that separate the sandstone units (following Mandle & Kontis 1992) and utilize the Time Variant Materials package available in Groundwater Vistas 7.0 (Rumbaugh & Rumbaugh, 2010) to simulate the correct timing of aquifer connections historically Mannix et al, 2019). The version of the IGFM used for this study is available in Hadley et al (2021).…”

“…We also calibrated the IGFM to monthly observed static water levels in the St. Peter and Ironton-Galesville sandstones as measured by SWPG communities by removing or modifying multi-aquifer well connections regionally (Abrams & Cullen, 2020). Outputs of head and drawdown from the IGFM (Hadley et al, 2021) are considered to be non-pumping (static) conditions since withdrawals are averaged over a yearly time step and are representative of head in the cell as opposed to head at the finite point of withdrawal Konikow et al, 2009).…”