This model application data release documents coupled transient and steady-state regional and inset numerical models of the Long Island aquifer system to simulate groundwater flow and nitrogen transport using the US Geological Survey groundwater modeling software MODFLOW 6 (Langevin and others, 2017 and 2022). The regional model domain encompasses all of Long Island, New York, while the inset model domain encompasses the Long Island Sound watershed on Long Island, New York. The development and calibration of the regional groundwater flow model is documented in Walter and others (2024). The development of regional groundwater nitrogen transport models and coupled regional-inset groundwater flow and nitrogen transport models are documented in Jahn and Walter (2025). Model input and output files included in this data release are documented in the readme.txt.
References:
Jahn, K.L. and Walter, D.A, 2025, Assessing Legacy Nitrogen in Groundwater using Numerical Models of the Long Island, New York Aquifer System, Preprint on EarthArXiv
Walter, D.A., Jahn, K.L., Masterson, J.P., Dressler, S.E., Finkelstein, J.S., and Monti, J., Jr., 2024, Simulation of Groundwater Flow in the Long Island, New York Regional Aquifer System for Pumping and Recharge Conditions From 1900 To 2019: U.S. Geological Survey Scientific Investigations Report 2024-5044, 114 p.
