30 year (1981 - 2010) annual average number of occurrences of dry and wet events for the Conterminous United States and District of Columbia

Publication Date

2019-04-24

Start Date

1981-01-01

End Date

2010-12-31

Wieczorek, M.E., and Sabitov, T.Y., 2019, 30 year (1981 - 2010) annual average number of occurrences of dry and wet events for the Conterminous United States and District of Columbia: U.S. Geological Survey data release, https://doi.org/10.5066/P9XIXKAG.

This data set was created by the U.S. Geological Survey's (USGS) Hydrologic Systems Team which is part of the USGS National Water Quality Program (NWQP). The spatial variability of the number of occurrences of consecutive dry (CDD) and consecutive wet (CWD) days is an important component with respect to water resources and hydrologic studies. The duration and frequency of precipitation can affect river flow, evapotranspiration, soil moisture, and groundwater recharge (Huntington, 2006). This effort was undertaken to estimate the 30 year (1981 - 2010) annual average number of occurrences of consecutive dry and wet days to support statistical analysis, map display, and model parameterization.

• USGS Data Release Products
• USGS Maryland, Delaware, and the District of Columbia Water Science Center