Jonathan manages projects quantifying flow hydraulics, riparian roughness, channel morphology, sediment-transport and hydrologic effects of proposed land use changes. Supervises construction of creek and river restoration projects. Responsible for many streamflow, constituent-transport, and recharge simulations. Evaluates historic flow records and identifies hydrologic patterns. Models stream network discharges and temporal requirements for targeted biological species to establish water availability for consumptive uses. Coordinates Balance’s stream gaging program, and manages Balance’s weekend-on-call storm-response monitoring program to collect high-flow and sediment field data. Participates in EIR/EIS analyses of drainage, water budgets, and likely effects of proposed land- or water-use changes on sensitive wetlands. Performs field investigations and modeling to assess flood levels in both natural streams and vegetated, urban, flood-control channels.