Date: Thursday February 4th, 2021
Droughts in New Jersey and the Delaware River Basin are infrequent but are high risk for water resource managers. There are 8.9 million people in New Jersey using water for potable supply, irrigation, industry and power generation. Over 600 billion gallons of water are withdrawn for these purposes each year. Shortfall brought on by drought can have extreme impacts. Scientific investigations into drought history and drought prediction offer resource managers information for decision making to mitigate risks associated with drought. This webinar will showcase two recent projects examining drought in the Delaware River Basin:
Estimating Delaware River Basin Drought Streamflow Probabilities Using Antecedent Flow Conditions
by Sam Austin
This talk will discuss ongoing project work to estimate hydrological drought streamflow probabilities. This methodology, capable of predicting droughts from 1 to 11 months in advance of their occurrence using streamflow daily mean values from prior months as explanatory variables within 342 gaged basins within the Delaware River Basin.
Hydro‐Climatic Drought in the Delaware River Basin
by Dave Wolock and Greg McCabe
In this study, a monthly water balance model is used to compute monthly water balance components (such as potential evapotranspiration (ET), actual ET, and runoff) for the DRB from 1901 through 2015. An examination of drought events estimated from a tree-ring based reconstruction of the Palmer Drought Severity Index for year 490 through 2005 indicates that although there were some DRB droughts that were longer and more severe during previous centuries, the DRB droughts between 1901 and 2015 were comparable in duration and severity to most drought events in previous centuries.
NJ-AWRA is currently reviewing credit eligibility for this talk.