Identifying priority watershed management areas for groundwater recharge protection on Hawai‘i Island

This report provides an analysis of the relative effectiveness of watershed conservation and restoration efforts in terms of groundwater recharge benefits in Hawaiʻi County Department of Water Supply (DWS) priority aquifers and recharge areas. In Kohala, Kona, and Kaʻū. With financial support from DWS and the National Science Foundation, EPSCoR ʻIke Wai project, this study builds upon a previous effort funded by the Hawaiʻi Community Foundation (HCF). Specifically, this report extends the previous report for HCF by: 1) expanding the area of interest to include priority recharge areas as well as target aquifers identified by DWS; 2) including an analysis of potential spread of non-native grassland into native forest areas; 3) including an analysis of changes in potential fog interception with change in land cover; and 4) adding an assessment of priority areas for native forest restoration.

Identifying priority watershed management areas for groundwater recharge protection on Hawai‘i Island