Green Peter and Foster Reservoirs 2023 CEQUAL-W2 Model

This data release consists of a two-dimensional (laterally averaged) hydrodynamic water-quality model (CE-QUAL-W2; Wells, 2019) of Green Peter and Foster Lakes for the 2023 calendar year, and three theoretical deep drawdown operational scenarios that apply the 2023 model to calendar year 2024. The model and scenarios were used to gain insights into the thermal processes in Green Peter and Foster Lakes and downstream water release temperatures from Green Peter Dam to the Middle Santiam River and from Foster Lake to the South Santiam River during deep drawdown operations, and to investigate the effects of deep reservoir drawdown timing on water temperatures within and downstream of Green Peter and Foster Lakes. The model and scenarios documented here were modified from the Green Peter and Foster Lakes model documented in Stratton Garvin and Rounds (2023) and Stratton Garvin and others (2023), and are not appropriate for use other than the intended purpose of comparing various drawdown operational scenarios using 2023 deep drawdown conditions to inform potential management decisions.