Integrating C2VSIM-FG, Borelogs, and CASGEM to Identify Gaining and Losing Stream Reaches in California’s Central Valley#
Understanding stream-aquifer interactions is critical for groundwater sustainability agencies to achieve their management goals. This dashboard leverages public datasets and open source tools (C2VSIM-FG, CASGEM, and DWR’s AEM borelogs) to identify gaining and losing reaches under various hydrologic conditions. In this dashboard, we use public datasets such as C2VSIM-FG, CASGEM, and the borelogs from DWR’s AEM survey to compare observed vs simulated groundwater levels in streams, compare them against streambed elevation, and characterize the interaction between the streams and the underlying aquifers. Animated transects offer stakeholders an intuitive way to visualize groundwater levels relative to streambed elevations.