General Information

Project area general description

The State of Vermont

Are any areas excluded?

The Connecticut River (except for the upper reaches in 01080101)

Types of flow statistics available

Peak Flows statewide

ArcGIS version used for processing

Originally 9.1, with some updates using 9.2 and 9.3

Was TopoGrid used to process DEMs?

Yes

DEM and derivatives projection (general description)

VT State Plane Meters

DEM and derivatives (fdr, fac, etc.) resolution

30m NED resampled to 10m

DEM source

National Elevation Dataset (NED 2004) http://ned.usgs.gov/

Hydrography source

High-resolution NHD circa 2004 http://nhd.usgs.gov/

Hydrologic unit "walls" source

WBD 1:24k

Gage basin boundaries source

NH/VT WSC digitized

Interactive map snapping tolerance

3 cells

 

Basin Characteristics Methods and Sources

Name

Description

Computation method

Data Source

Report

Variable label in report

DRNAREA

Area that drains to a point on a stream in square miles.

polygon area

GlobalWatershed

Olson (2014)

A

LC06STOR

Percent of area covered by wetlands

percent of area

National Land Cover Dataset, 2006

Olson (2014)

W

CENTROIDX

Basin centroid horizontal (x) location in MA state plane coordinates

ArcHydro custom op

CENTROIDY

Basin centroid vertical (y) location in MA state plane coordinates

ArcHydro custom op

OUTLETX

Basin outlet horizontal (x) location in MA state plane coordinates

ArcHydro custom op

OUTLETY

Basin outlet vertical (y) location in MA state plane coordinates

ArcHydro custom op

PRECPRIS10

Mean annual precipitation in VT, in inches

area-weighted mean

PRISM 1981-2010 annual precipitation dataset. PRISM dataset resampled to 10-m cell with bilinear interpolation

Olson (2014)

P

LC11DEV

Percentage of area covered by Urban land use, from NLCD 2011

percent of area

NLCD 2011, codes 21-24 http://www.mrlc.gov/nlcd01_data.php

LC11IMP

Percentage of area covered by impervious surfaces, from NLCD 2011

area-weighted mean

NLCD 2011 imperviousness grid http://www.mrlc.gov/nlcd01_data.php

EL1200

Percentage of basin at or above 1200 ft elevation

percent of area

10-meter National Elevation Dataset (NED)

 

The Vermont StreamStats introductory page here has additional information regarding the application, including links to reports, cooperators, and other explanatory information.