Skip to main content


Maoya Bassiouni

This Project Snapshot provides a brief overview of the project "Development of Statistical Methods to Estimate Baseline and Future Low Flow Characteristics of Ungaged Streams in Hawai`i".
Supplementary data for studies conducted in the Luquillo Experimental Forest (LEF), eastern Puerto Rico include measurements of temperature, relative humidity and cloud immersion at 30-minute resolution. Temperature and relative humidity were measured at five sites; two primary sites have records from March 2014 to June 2019; other sites have shorter records within that period. From these data, derived values of dew point, vapor pressure deficit (VPD), and evaporative fraction were calculated. Daily 13:00 temperature and VPD gradients with elevation along the windward forested slope were calculated using the 2 primary sites from from March 2014 to November 2014, then on days with data from at least 3 of the 5...
Climate change will affect the beneficial uses of streamflow, which include supplying freshwater for irrigation and domestic needs, providing for traditional and customary Hawaiian practices, and maintaining habitat for native stream fauna. Statistical models were developed to estimate surface-water availability during low-flow conditions for varying rainfall conditions. Results of this study include a spatial understanding of changes in low flows and usable stream habitat on Maui for a range of projected rainfall conditions for the late 21st century. This analysis indicates that stream responses to rainfall vary spatially in Hawai‘i. For example, a 10-percent decrease in rainfall may result in a 7% decrease in...
ScienceBase brings together the best information it can find about USGS researchers and offices to show connections to publications, projects, and data. We are still working to improve this process and information is by no means complete. If you don't see everything you know is associated with you, a colleague, or your office, please be patient while we work to connect the dots. Feel free to contact