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Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstrea...
This tabular data set represents the mean Julian year day of the year of the first freeze, from 30 years of record (1961-1990) compiled for two spatial components of the NHDPlus... -
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstrea...
This tabular data set represents the mean Julian year day of the year of the first freeze, from 30 years of record (1961-1990) compiled for two spatial components of the NHDPlus...