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Terms, Statistics, and Performance Measures for Maximum Likelihood Logistic Regression Models Estimating Hydrological Drought Probabilities in the Delaware River Basin (2020) Tables are presented listing parameters and fit statistics for 25,453 maximum likelihood logistic regression (MLLR) models describing hydrological drought probabilities at 324 gaged locations on rivers and streams in the Delaware River Basin (DRB). Data from previous months are used to estimate chance of hydrological drought during future summer months. Models containing 1 explanatory variable use monthly mean daily streamflow data (DV) to provide hydrological drought streamflow probabilities for July, August, and September as functions of monthly mean DV from the previous 11 months. Outcomes are estimated 1 to 12 months ahead of their occurrence. Models containing 2 explanatory variables use monthly mean daily... Categories: Data; Tags: Connecticut, Delaware, District of Columbia, Hydrology, New Jersey, All tags... New York, Pennsylvania, Rhode Island, USGS Science Data Catalog (SDC), Virginia, decision support system, drought, forecasting, risk assessment, streamflow, surface water hydrology, water supply, watershed management, Fewer tags