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StreamStats

Montana StreamStats Application Information


General Information

Project area general description

The state of Montana, the portion of Wyoming in the Yellowstone and  Little Missouri River Basins

Are any areas excluded?

Portions of the mainstem Milk, Missouri, and Yellowstone Rivers; and the Belle Fourche Basin in the extreme southeast corner of Montana

Types of flow statistics available

Peak flows statewide, and low flow frequencies; mean annual and mean monthly streamflows; and the 20-, 50-, and 80-percent durations for monthly and annual streamflows in Western Montana

ArcGIS version used for processing

10.2.2

Was TopoGrid used to process DEMs?

No

DEM and derivatives projection (general description)

NAD83 Albers

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

30 m

DEM source

NED

Hydrography source

NHDPlus Version 2

Hydrologic unit “walls” source

WBD

Gage basin boundaries source

Not used

Interactive map snapping tolerance

3 cells

Basin characteristics computed using continuous parameter grids (CPGs)

BSLDEM30M, ELEV, EL5000, EL6000, LC01CRPHAY, LC01FOREST, IRRIGAT_MT, LAKESNHDH, NFSL30_30M, PRECIP, SLOP30_30M, SLOP50_30M, ET0306MOD, ET0710MOD, LC01DEV, LC01WETLND

 

Basin Characteristics Methods and Sources

Name

Description

Computation method

Data source

Report

Variable in report

CONTDA

Contributing Drainage Area

Basin area

30M DEM and 30M flow direction grid

SIR 2015-5019-F, G

A

ELEV

Mean basin elevation, in feet

Area-weighted mean

30M DEM

SIR 2015-5019-F, G

E

TEMP

Mean annual temperature, in degrees Fahrenheit

Area-weighted mean

PRISM (United States) and Long Term Mean Climate Grids, 1971-2000 (Canada)

SIR 2015-5019-G

--

ELEVMAX

Maximum elevation in feet

Basin max elevation

30M DEM

SIR 2015-5019-F, G

--

MINBELEV

Minimum elevation in feet

Basin min elevation

30M DEM

SIR 2015-5019-F, G

--

RELIEF

Maximum – minimum elevation, in feet

Computed

30M DEM

SIR 2015-5019-F, G

--

EL5000

Percent of basin above 5,000 feet elevation

Basin percent

30M DEM

SIR 2015-5019-F, G

E5000

EL6000

Percent of basin above 6,000 feet elevation

Basin percent

30M DEM

SIR 2015-5019-F, G

E6000

IRRIGAT_MT

Percent of basin under some irrigation regime

Basin percent

Final Land Unit  (FLU) classification, Montana Department of Revenue (2014)

SIR 2015-5019-G

--

LAKESNHDH

Percent of basin covered in lakes, ponds, and reservoirs

Basin percent

NHD high resolution waterbodies

SIR 2015-5019-F, G

--

LC01CRPHAY

Percent of basin covered by agriculture

Basin percent

NLCD2001 and LCC2000

SIR 2015-5019-G

--

LC01DEV

Percent of basin covered by urban land

Basin percent

NLCD2001 and LCC2000

SIR 2015-5019-G

--

LC01WETLND

Percent of basin covered by wetlands

Basin percent

NLCD2001 and LCC2000

SIR 2015-5019-F, G

--

BSLDEM30M

Mean basin slope, in percent

Basin slope

30M DEM

SIR 2015-5019-F, G

--

SLOP30_30M

Percent of basin with slopes greater than or equal to 30 percent

Basin percent

30M DEM

SIR 2015-5019-F, G

SLP30

NFSL30_30M

Percent of basin with north-facing slopes greater than or equal to 30 percent

Basin percent

30M DEM

SIR 2015-5019-G

--

SLOP50_30M

Percent of basin with slopes greater than or equal to 50 percent

Basin percent

30M DEM

SIR 2015-5019-F, G

SLP50

PRECIP

Mean annual precipitation, in inches

Area-weighted mean

PRISM (United States) and Long Term Mean Climate Grids, 1971-2000 (Canada)

SIR 2015-5019-F, G

P

LC01FOREST

Percent of basin covered by forest

Basin percent

NLCD2001 and LCC2000

SIR 2015-5019-F, G

F

ET0306MOD

Average spring (March-June) mean monthly evapotranspiration (2000-2012) in inches

Area-weighted mean

MODIS global evapotranspiration product (MOD16)

SIR 2015-5019-F, G

ETSPR

ET0710MOD

Average summer (July - October) mean monthly evapotranspiration (2000-2012) in inches

Area-weighted mean

MODIS global evapotranspiration product (MOD16)

SIR 2015-5019-F, G

--

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