Mean annual water-budget components for Kauaʻi, Oʻahu, Molokaʻi, Lānaʻi, Maui, and the Island of Hawaiʻi for a set of recent and future climate conditions, and 2020 land cover
Dates
Publication Date
2024-05-22
Citation
Kāne, H.L., Mair, A., and Mifflin, J., 2024, Mean annual water-budget components for Kauaʻi, Oʻahu, Molokaʻi, Lānaʻi, Maui, and the Island of Hawaiʻi, for a set of recent and future climate conditions, and 2020 land cover: U.S. Geological Survey data release, https://doi.org/10.5066/P972KMSL.
Summary
The shapefiles in this dataset represent the spatial distribution of mean annual water-budget components, in inches, for Kauaʻi, Oʻahu, Molokaʻi, Lānaʻi, Maui, and the Island of Hawaiʻi, for a set of recent and future climate conditions, and 2020 land cover. The four main climate scenarios used in the water-budget analyses include a reference climate scenario representative of recent conditions during 1978–2007, hereinafter the 1978–2007 scenario, and three downscaled future-climate projections that span a range of future-climate conditions for each island. The three future-climate projections include (1) a mid-century scenario using projected rainfall conditions representative of phase 5 of the Coupled Model Intercomparison Project [...]
Summary
The shapefiles in this dataset represent the spatial distribution of mean annual water-budget components, in inches, for Kauaʻi, Oʻahu, Molokaʻi, Lānaʻi, Maui, and the Island of Hawaiʻi, for a set of recent and future climate conditions, and 2020 land cover. The four main climate scenarios used in the water-budget analyses include a reference climate scenario representative of recent conditions during 1978–2007, hereinafter the 1978–2007 scenario, and three downscaled future-climate projections that span a range of future-climate conditions for each island. The three future-climate projections include (1) a mid-century scenario using projected rainfall conditions representative of phase 5 of the Coupled Model Intercomparison Project (CMIP5) Representative Concentration Pathway 8.5 (RCP8.5) 2041–71 scenario climate described in Elison Timm and others (2015), hereinafter the SD RCP8.5 2041–71 scenario, (2) a dry-climate scenario using projected rainfall conditions representative of the CMIP5 RCP8.5 2071–99 scenario climate described in Elison Timm and others (2015), hereinafter the SD RCP8.5 2071–99 scenario, and (3) a wet-climate scenario using projected rainfall conditions for an HRCM1 A1B 2080–99 scenario for Maui (Zhang and others, 2017), an HRCM2 RCP4.5 2080–99 scenario for Kauaʻi, Lānaʻi, and Hawaiʻi Island, and a HRCM2 RCP8.5 2080–99 scenario for Oʻahu and Molokaʻi (Zhang and others, 2016). A fifth water-budget scenario was added for Lānaʻi to assess the effect of dry conditions during the 1998–2012 drought. The water-budget components for each model subarea were computed for each climate scenario using a water-budget model developed by Oki (2022). A set of land-cover classes representative of conditions around 2020 was developed for this study to define the land-cover conditions for each model subarea (or polygon). The shapefile attribute information associated with each subarea present the land-cover class and an estimate of mean annual rainfall, fog interception, irrigation, septic-system leachate, seepage from reservoirs and cesspools, runoff, canopy evaporation, total evapotranspiration, and groundwater recharge. This shapefile also includes select geographic and land-cover attributes of the model subareas. Brief descriptions of the water-budget components and attributes are included in this metadata file. Refer to Kāne and others (2024) for further details of the methods and sources used to determine these components and attributes.
Click on title to download individual files attached to this item.
Recharge_1978_2007_all_islands_CMYK.png “Map of mean annual groundwater recharge for 1978–2007 scenario ”
520.49 KB
image/png
Related External Resources
Type: Related Primary Publication
Kāne, H.L., Mair, A., Johnson, A.G., Rotzoll, K., Mifflin, J., and Oki, D.S., 2024, Estimated groundwater recharge for mid-century and end-of-century climate projections, Kaua‘i, O‘ahu, Moloka‘i, Lāna‘i, Maui, and the Island of Hawai‘i: U.S. Geological Survey Scientific Investigations Report 2023–5130
Mair, A., Oki, D.S., Kāne, H.L., Johnson, A.G., and Rotzoll, K., 2024, Effects of drought and cloud-water interception on groundwater recharge and wildfire hazard for recent and future climate conditions, Kauaʻi, Oʻahu, Molokaʻi, Maui, and the Island of Hawaiʻi: U.S. Geological Survey Scientific Investigations Report 2023–5141
The water-budget components in this shapefile were determined as part of a study to estimate the spatial distribution of groundwater recharge on Kauaʻi, Oʻahu, Molokaʻi, Lānaʻi, Maui, and the Island of Hawaiʻi, for a 2020 land cover and a set of four climate scenarios, as described in Kāne and others (2024). 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 each island.
Preview Image
Map of mean annual groundwater recharge for 1978–2007 scenario