Gregory Granato is a hydrologist whose research focuses on developing hydrologic software to provide actionable information for environmental decisionmakers. Gregory has worked with the USGS on projects covering all aspects of hydrology since 1992. Before that time he was an aerospace engineer working on the design of the Space Station water and waste treatment systems.
Software (currently supported):
SELDM Stochastic Empirical Loading and Dilution Model
KTRLine Kendall-Theil Robust Line
Streamflow software
Highway-Runoff Database
Patents:
Automated Groundwater Monitoring System and Method U.S. Patent 6,021,664
Automated self-calibrating water quality monitoring sensor housing assembly U.S. Patent 6,936,156
Publications:
USGS NTCenter Class:
H1843 - Stormwater Runoff Quality Analysis with SELDM Developed and taught this class 2013-present
National Webinars:
NASEM TRB Approaches for Determining and Complying with TMDL Requirements Related to Roadway Stormwater Runoff
Water Research Foundation Integrated Stormwater Management for Highway and Transportation Sector (2017)
NASEM TRB Use and Implementation of the Federal Highway Administration Stochastic Empirical Loading and Dilution Model
Other research activities:
NASEM TRB Standing Committees
AKD50 Standing Committee on Hydrology, Hydraulics and Stormwater
NASEM National Cooperative Highway Research Program Research Panels
NCHRP 25-25 Enhancing the International Stormwater BMP Database
NCHRP 25-31 Improving Water Quality in Ultra-Urban Areas
NCHRP 25-32 Measuring and Removing Dissolved Metals from Storm Water
NCHRP 25-40 Long-Term Performance and Life-Cycle Costs of Stormwater BMPs
NCHRP 25-53 Approaches for Determining and Complying with TMDL Requirements
ASCE Outstanding Reviewer Prize: Reston, 2015
The Rhode Island Water Resources Board is considering use of groundwater resources from the Big River Management Area in central Rhode Island because increasing water demands in Rhode Island may exceed the capacity of current sources. Previous water-resources investigations in this glacially derived, valley-fill aquifer system have focused...
Masterson, John P.; Granato, Gregory E.
The Stochastic Empirical Loading and Dilution Model (SELDM) is designed to transform complex scientific data into meaningful information about the risk of adverse effects of runoff on receiving waters, the potential need for mitigation measures, and the potential effectiveness of such management measures for reducing these risks. The U.S....
Granato, Gregory E.
A nationwide study to better define triangular-hydrograph statistics for use with runoff-quality and flood-flow studies was done by the U.S. Geological Survey (USGS) in cooperation with the Federal Highway Administration. Although the triangular hydrograph is a simple linear approximation, the cumulative distribution of stormflow with a triangular...
Granato, Gregory E.
The U.S. Geological Survey (USGS), in cooperation with U.S. Department of Transportation Federal Highway Administration and the Massachusetts Department of Transportation, conducted a field study from September 2005 through September 2007 to characterize the quality of highway runoff for a wide range of constituents. The highways studied had...
Smith, Kirk P.; Granato, Gregory E.
This report documents methods for data compilation and analysis of statistics for stormflows that meet data-quality objectives for order-of-magnitude planning-level water-quality estimates at unmonitored sites in the conterminous United States. Statistics for prestorm streamflow, precipitation, and runoff coefficients are used to model stormflows...
Granato, Gregory E.
Streamflow information is important for many planning and design activities including water-supply analysis, habitat protection, bridge and culvert design, calibration of surface and ground-water models, and water-quality assessments. Streamflow information is especially critical for water-quality assessments (Warn and Brew, 1980; Di Toro, 1984;...
Granato, Gregory E.
The Pawcatuck River Basin in southwestern Rhode Island and southeastern Connecticut is an important high-quality water resource for domestic and public supplies, irrigation, recreation, and the aquatic ecosystem. Concerns about the effects of water withdrawals on aquatic habitat in the basin have prompted local, State, and Federal agencies to...
Breault, Robert F.; Zarriello, Phillip J.; Bent, Gardner C.; Masterson, John P.; Granato, Gregory E.; Scherer, J. Eric; Crawley, Kathleen M. 
The Kendall-Theil Robust Line software (KTRLine-version 1.0) is a Visual Basic program that may be used with the Microsoft Windows operating system to calculate parameters for robust, nonparametric estimates of linear-regression coefficients between two continuous variables. The KTRLine software was developed by the U.S. Geological Survey, in...
Granato, Gregory E. Transient numerical ground-water-flow simulation and optimization techniques were used to evaluate potential effects of instream-flow criteria and water-supply demands on ground-water development options and resultant streamflow depletions in the Big River Area, Rhode Island. The 35.7 square-mile (mi2) study area includes three river basins, the...
Granato, Gregory E.; Barlow, Paul M. In Rhode Island, the availability of water of sufficient quality and quantity to meet current and future environmental and economic needs is vital to life and the State's economy. Water suppliers, the Rhode Island Water Resources Board (RIWRB), and other State agencies responsible for water resources in Rhode Island need information about...
Granato, Gregory E.