General Information
Project area general description |
The five largest islands of Hawaii |
Are any areas excluded? |
No |
Types of flow statistics available |
Peak flows (flood frequencies) |
ArcGIS version used for processing |
9.3 |
Was TopoGrid used to process DEMs? |
No |
DEM and derivatives projection (general description) |
UTM Zone 4, North American Datum of 1983, vertical datum NAVD 88 |
DEM and derivatives (fdr, fac, etc.) resolution |
10 m |
DEM source |
One-third-arc-second NED, 09/2006, http://ned.usgs.gov/ |
Hydrography source |
National Hydrography Dataset (NHD) - High-resolution, 05/2008, http://nhd.usgs.gov/ |
Hydrologic unit "walls" source |
not used |
Gage basin boundaries source |
Selected boundaries for basins above USGS stream gages, Unpublished written communications -- Delwyn Oki, 07/2009 |
Interactive map snapping tolerance |
3 cells |
Basin characteristics computed using continuous parameter grids (CPGs). CPGs improve web-site performance and are precomputed for every grid cell. Due to accumulated numeric rounding, the results may differ slightly from standard non-CPG computations. Non-CPG computations are used for edited basins. |
BSLDEM10M, ELEV, I60M2Y, I06H2Y, I24H2Y, I48H2Y, I60M5Y, I06H5Y, I24H5Y, I48H5Y, I60M10Y, I06H10Y, I24H10Y, I48H10Y, I60M25Y, I06H25Y, I24H25Y, I48H25Y, I60M50Y, I06H50Y, I24H50Y, I48H50Y, I60M100Y, I06H100Y, I24H100Y, I48H100Y, I60M500Y, I06H500Y, I24H500Y, I48H500Y, NLCD012122, NLCD01_23, NLCD01_24, NLCD01_31, NLCD01_42, NLCD01_82, PRECIP, SLOP30_10M |
Basin Characteristics Methods and Sources
Name |
Description |
Computation method |
Data source |
BSLDEM10M |
Mean basin slope computed from 10 m DEM, in percent |
area-weighted mean |
wshslopepct, http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
CENTROIDY |
Y coordinate of the centroid in map coordinates |
computed by ArcGIS |
delineated basin |
COMPRAT |
Compactness ratio, dimensionless |
PERIMMI / (2*(3.14159*DRNAREA)^0.5) |
computed |
CSL1085LFP |
10-85 slope in feet per mile based on longest flow path |
ArcHydro Tools LFPathOp |
Hydro-enforced DEM derivatives (fdr and dem), http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
DRNAREA |
Drainage area in square miles |
polygon area |
delineated basin |
ELEV |
Mean Basin Elevation in feet |
area-weighted mean |
dem, http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
ELEV10FT |
Elevation at 10 percent from outlet along Longest flow path in feet, using DEM |
ArcHydro Tools LFPathOp |
Hydro-enforced DEM derivatives (fdr and dem), http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
ELEV10FT3D |
Elevation at 10 percent from outlet along Longest flow path in feet, using 3D line |
ArcHydro Tools LFPathOp |
Hydro-enforced DEM derivatives (fdr and dem), http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
ELEV85FT |
Elevation at 85 percent from outlet along Longest flow path in feet, using DEM |
ArcHydro Tools LFPathOp |
Hydro-enforced DEM derivatives (fdr and dem), http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
ELEV85FT3D |
Elevation at 85 percent from outlet along Longest flow path in feet, using 3D line |
ArcHydro Tools LFPathOp |
Hydro-enforced DEM derivatives (fdr and dem), http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
ELEVMAX |
Maximum Basin Elevation in feet |
maximum |
dem, http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
I06H100Y |
6 Hour 100 Year Precipitation in inches |
area-weighted mean |
hi100yr06ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I06H10Y |
6 Hour 10 Year Precipitation in inches |
area-weighted mean |
hi10yr06ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I06H25Y |
6 Hour 25 Year Precipitation in inches |
area-weighted mean |
hi25yr06ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I06H2Y |
6 Hour 2 Year Precipitation in inches |
area-weighted mean |
hi2yr06ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I06H500Y |
6 Hour 500 Year Precipitation in inches |
area-weighted mean |
hi500yr06ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I06H50Y |
6 Hour 50 Year Precipitation in inches |
area-weighted mean |
hi50yr06ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I06H5Y |
6 Hour 5 Year Precipitation in inches |
area-weighted mean |
hi5yr06ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I24H100Y |
24 Hour 100 Year Precipitation in inches |
area-weighted mean |
hi100yr24ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I24H10Y |
24 Hour 10 Year Precipitation in inches |
area-weighted mean |
hi10yr24ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I24H25Y |
24 Hour 25 Year Precipitation in inches |
area-weighted mean |
hi25yr24ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I24H2Y |
24 Hour 2 Year Precipitation in inches |
area-weighted mean |
hi2yr24ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I24H500Y |
24 Hour 500 Year Precipitation in inches |
area-weighted mean |
hi500yr24ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I24H50Y |
24 Hour 50 Year Precipitation in inches |
area-weighted mean |
hi25yr24ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I24H5Y |
24 Hour 5 Year Precipitation in inches |
area-weighted mean |
hi5yr24ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I48H100Y |
48 Hour 100 Year Precipitation in inches |
area-weighted mean |
hi100yr48ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I48H10Y |
48 Hour 10 Year Precipitation in inches |
area-weighted mean |
hi10yr48ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I48H25Y |
48 Hour 25 Year Precipitation in inches |
area-weighted mean |
hi25yr48ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I48H2Y |
48 Hour 2 Year Precipitation in inches |
area-weighted mean |
hi2yr48ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I48H500Y |
48 Hour 500 Year Precipitation in inches |
area-weighted mean |
hi500yr48ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I48H50Y |
48 Hour 50 Year Precipitation in inches |
area-weighted mean |
hi50yr48ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I48H5Y |
48 Hour 5 Year Precipitation in inches |
area-weighted mean |
hi5yr48ha, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I60M100Y |
60 Minute 100 Year Precipitation in inches |
area-weighted mean |
hi100yr60ma, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I60M10Y |
60 Minute 10 Year Precipitation in inches |
area-weighted mean |
hi10yr60ma, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I60M25Y |
60 Minute 25 Year Precipitation in inches |
area-weighted mean |
hi25yr60ma, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I60M2Y |
60 Minute 2 Year Precipitation in inches |
area-weighted mean |
hi2yr60ma, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I60M500Y |
60 Minute 500 Year Precipitation in inches |
area-weighted mean |
hi500yr60ma, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I60M50Y |
60 Minute 50 Year Precipitation in inches |
area-weighted mean |
hi50yr60ma, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
I60M5Y |
60 Minute 5 Year Precipitation in inches |
area-weighted mean |
hi5yr60ma, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
IMPNLCD01 |
Percentage of impervious area determined from NLCD 2001 impervious dataset |
percentage of area |
impnlcd01, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
LFPLENGTH |
Length of associated Longest Flow Path in miles |
ArcHydro Tools LFPathOp |
Hydro-enforced DEM derivatives (fdr and dem), http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
MINBELEV |
Minimum Basin Elevation in feet |
minimum |
dem, http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
NLCD01_23 |
Medium Intensity Developed Land from NLCD2001, in percent of basin area |
percentage of area |
nlcd01_23, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
NLCD01_24 |
High Intensity Developed Land from NLCD2001, in percent of basin area |
percentage of area |
nlcd01_24, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
NLCD01_31 |
Barren Land from NLCD2001, in percent of basin area |
percentage of area |
nlcd01_31, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
NLCD01_42 |
Evergreen Forest Land from NLCD2001, in percent of basin area |
percentage of area |
nlcd01_42, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
NLCD01_82 |
Cultivated Crop Land from NLCD2001, in percent of basin area |
percentage of area |
nlcd01_82, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
NLCD012122 |
Developed Open Space and Low Intensity Developed Land from NLCD2001, in percent of basin area |
percentage of area |
nlcd012122, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
PERIMMI |
Perimeter in miles |
computed by ArcGIS |
delineated basin |
PERM12IN |
Area-weighted mean soil permeability (top 12 inches), in inches per hour (NRCS SSURGO database) |
area-weighted mean |
perm12in, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
PERM24IN |
Area-weighted mean soil permeability (top 24 inches), in inches per hour (NRCS SSURGO database) |
area-weighted mean |
perm24in, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
PRECIP |
Mean Annual Precipitation in inches |
area-weighted mean |
precip_1k_in, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
RELIEF |
Maximum - minimum elevation, in feet |
ArcHydro Tools COMPMETHOD=RANGE |
computed |
RELRELFFM |
Relative relief in feet per mile |
RELIEF/PERIMMI |
computed |
SLOP30_10M |
Percent of area having slope greater than or equal to 30 percent, as measured from 10-m DEM |
percentage of area |
wshslopege30, http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
SLPFM3D |
Longest flow path slope in feet per miles using 3D Line |
ArcHydro Tools LFPathOp |
Hydro-enforced DEM derivatives (fdr and dem), http://water.usgs.gov/lookup/getspatial?ds680_archydrohucs |
URBNLCD01 |
Percentage of urban land cover determined from NLCD 2001 land cover dataset |
percentage of area |
urbnlcd01, http://water.usgs.gov/lookup/getspatial?ds680_statewidelayers |
The Hawaii StreamStats introductory page here has additional information regarding the application, including links to reports, cooperators, and other explanatory information.