Mean annual water-budget components for the Island of Oahu, Hawaii, for current conditions, 2001-10 rainfall and 2001-10 land cover (ver. 2.0)
Dates
Publication Date
2018-02-16
Start Date
2001-01-01
End Date
2010-12-31
Release Date
2016-06
Citation
Engott, J.A., 2018, Mean annual water-budget components for the Island of Oahu, Hawaii, for current conditions, 2001-10 rainfall and 2001-10 land cover (ver. 2.0, February 2018): U.S. Geological Survey data release, https://doi.org/10.5066/F72F7KH4.
Summary
This shapefile represents the spatial distribution of mean annual water-budget components, in inches, for the Island of Oahu, Hawaii. The water-budget components in the shapefile were computed by a water-budget model for a scenario representative of current conditions (2001-10 rainfall and 2001-10 land cover), as described in USGS Scientific Investigations Report (USGS SIR) 2015-5164. The model was developed for estimating groundwater recharge and other water-budget components for each subarea of the model. The model-subarea dataset, consisting of 395,955 subareas (polygons), was generated using Esri ArcGIS software by intersecting (merging) multiple spatial datasets. Spatial datasets merged include those that characterize the spatial [...]
Summary
This shapefile represents the spatial distribution of mean annual water-budget components, in inches, for the Island of Oahu, Hawaii. The water-budget components in the shapefile were computed by a water-budget model for a scenario representative of current conditions (2001-10 rainfall and 2001-10 land cover), as described in USGS Scientific Investigations Report (USGS SIR) 2015-5164. The model was developed for estimating groundwater recharge and other water-budget components for each subarea of the model. The model-subarea dataset, consisting of 395,955 subareas (polygons), was generated using Esri ArcGIS software by intersecting (merging) multiple spatial datasets. Spatial datasets merged include those that characterize the spatial distribution of hydrologic and physical conditions (rainfall, fog interception, irrigation, reference evapotranspiration, direct runoff, soil type, and land cover) that the model uses to compute groundwater recharge and other water-budget components. Additional spatial datasets merged into the model-subarea dataset include those of select geographic features that assist in analyzing model results. The associated metadata file describes the process of merging these spatial datasets. The shapefile attribute information associated with each polygon present an estimate of mean annual rainfall, fog interception, irrigation, septic-system leachate, runoff, canopy evaporation, actual evapotranspiration, storm-drain capture, net precipitation, total evapotranspiration, recharge, and seepage from water main, reservoirs, and cesspools. This shapefile also includes select geographic and land-cover attributes of the polygons. Brief descriptions of the water-budget components and attributes are included in the metadata file. Refer to USGS SIR 2015-5164 and SIR 2015-5010 for further details of the methods and sources used to determine these components and attributes.
First published - June 2016, ver. 1.0
Revised - February 2018, ver. 2.0
The water-budget components in this shapefile were determined as part of a study to estimate the spatial distribution of groundwater recharge on the Island of Oahu, Hawaii, for a scenario representative of current conditions (2001-10 rainfall and 2001-10 land cover), as described in USGS SIR 2015-5164. The recharge estimates may be used in numerical groundwater models that can evaluate the effects of groundwater withdrawals on groundwater levels, streamflow, coastal discharge, and salinities in public and private wells on Oahu.