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  4. Select Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Network Routed Upstream Watersheds for the Conterminous United States (ver. 4.0, August 2023)
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  6. Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds: 30 year (1981 - 2010) average of annual maximum duration of consecutive dry and wet days per event for the Conterminous United States and District of Columbia

Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds: 30 year (1981 - 2010) average of annual maximum duration of consecutive dry and wet days per event for the Conterminous United States and District of Columbia

Dates

Publication Date
Start Date
1981-01-01
End Date
2010-12-31

Citation

Wieczorek, M.E., Jackson, S.E., and Schwarz, G.E., 2018, Select Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Network Routed Upstream Watersheds for the Conterminous United States (ver. 4.0, August 2023): U.S. Geological Survey data release, https://doi.org/10.5066/F7765D7V.

Summary

This tabular data describes the average of annual maximum duration of consecutive dry and wet days per event, where precipitation totals are 0 or equal and exceeds 1 millimeters respectively, during the 30-year period 1981 – 2010 for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. A wet event is defined as a period when the number of consecutive days with precipitation equals or exceeds 1 millimeter. A dry event is defined as a period when the number of consecutive days with precipitation equals 0 millimeters. This dataset can be linked to the NHDPlus version 2 data suite [...]

Contacts

Point of Contact :
Michael E Wieczorek, Maryland-Delaware-D.C. Water Science Center
Originator :
Michael E Wieczorek, Shannon E Jackson, Gregory E Schwarz
Metadata Contact :
Michael E Wieczorek
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
USGS Mission Area :
Water Resources
SDC Data Owner :
Maryland-Delaware-D.C. Water Science Center

Attached Files

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NHDV2_CDD_CWD_Max.xml
Original FGDC Metadata
View 		23.49 KB application/fgdc+xml
6398cdabd34e0de3a1f0d773_cat.parquet 19.21 MB application/octet-stream
ResWetMax.txt 137.34 MB text/plain
ResDryMax.txt 145.88 MB text/plain
6398cdabd34e0de3a1f0d773_acc.parquet 41.99 MB application/octet-stream
6398cdabd34e0de3a1f0d773_tot.parquet 42.53 MB application/octet-stream

Purpose

The spatial variability of 30 year (1981 - 2010) annual maximum duration of consecutive dry and wet days is an important component with respect to water resources and hydrologic studies. This effort was undertaken to estimate the 30 year (1981 - 2010) average annual maximum duration of consecutive dry and wet days per event for NHDPlusV2 flowline catchments and upstream river networks to support statistical analysis, map display, and model parameterization.

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Communities

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

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