Glenn Hodgkins
Glenn Hodgkins is a Research Hydrologist with the New England Water Science Center.
Glenn's work in recent years has focused on statistical hydrology at the regional, national, and international scale, primarily on the analysis of change and variability of historical streamflow and groundwater, and also on probabilistic forecasting and model evaluation. Glenn is the lead author or co-author on 28 peer-reviewed articles in hydrology and climate journals and 31 USGS scientific reports.
Professional Experience
Research Hydrologist, U.S. Geological Survey, New England Water Science Center, 2014 to Present
Hydrologist, U.S. Geological Survey, New England Water Science Center, 1994 to 2014
Hydrologist, U.S. Geological Survey, Indiana Water Science Center, 1990 to 1994
Education and Certifications
M.S. Engineering, Purdue University, 1995
B.S. Civil Engineering, University of Maine, 1990
Science and Products
Historical trend in ice thickness on the Piscataquis river, near Dover-Foxcroft, central Maine
Trends in streamflow, river ice, and snowpack for coastal river basins in Maine during the 20th century
Summer low flows in New England during the 20th Century
Historical trend in the ratio of solid to total precipitation
Estimating the magnitude of peak flows for streams in Kentucky for selected recurrence intervals
Historical Dates of Ice-Affected Flows for 18 Rivers in New England
Historical trend in ice thickness on the Piscataquis River in central Maine.
Historical Ice-Out Dates for 29 Lakes in New England
Snowpack in Maine - Maximum Observed and March 1 Mean Equivalent Water Content
Observed and Predicted Pier Scour in Maine
Trends in Streamflow, River Ice, and Snowpack for Coastal River Basins in Maine During the 20th Century
Evaluation of the Effects of Development on Peak-Flow Hydrographs for Collyer Brook, Maine
Science and Products
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Filter Total Items: 64
Historical trend in ice thickness on the Piscataquis river, near Dover-Foxcroft, central Maine
No abstract available.AuthorsThomas G. Huntington, Glenn A. Hodgkins, Robert W. DudleyTrends in streamflow, river ice, and snowpack for coastal river basins in Maine during the 20th century
No abstract available.AuthorsRobert W. Dudley, Glenn A. HodgkinsSummer low flows in New England during the 20th Century
High springtime river flows came earlier by one to two weeks in large parts of northern New England during the 20th Century. In this study it was hypothesized that late spring/early summer recessional flows and late summer/early fall low flows could also be occurring earlier. This could result in a longer period of low flow recession and a decrease in the magnitude of low flows. To test this hypotAuthorsGlenn A. Hodgkins, R. W. Dudley, Thomas G. HuntingtonHistorical trend in the ratio of solid to total precipitation
No abstract availableAuthorsThomas G. Huntington, Glenn A. Hodgkins, B.D. Keim, Robert W. DudleyEstimating the magnitude of peak flows for streams in Kentucky for selected recurrence intervals
This report gives estimates of, and presents techniques for estimating, the magnitude of peak flows for streams in Kentucky for recurrence intervals of 2, 5, 10, 25, 50, 100, 200, and 500 years. A flowchart in this report guides the user to the appropriate estimates and (or) estimating techniques for a site on a specific stream. Estimates of peak flows are given for 222 U.S. Geological Survey sAuthorsGlenn A. Hodgkins, Gary R. MartinHistorical Dates of Ice-Affected Flows for 18 Rivers in New England
Historical dates of ice-affected flows for 18 rivers in New England were compiled and are presented in this report. The length of this record for the rivers ranges from 48 to 71 years, with an average of 62 years. The minimum number of days of ice-affected flow in a water year (October 1 to September 30) ranged from zero on three rivers in south-coastal Maine and coastal New Hampshire to 110 on thAuthorsGlenn A. Hodgkins, James M. Caldwell, Robert W. DudleyHistorical trend in ice thickness on the Piscataquis River in central Maine.
We analyzed a long-term record of ice thickness on the Piscataquis River in central Maine to determine whether there were temporal trends that were associated with climate warming. Trends in ice thickness were compared and correlated with regional time series of winter air temperature, heating degree days (HDD) , date of river ice-out, seasonal center-of-volume date (SCVD) (date on which half of tAuthorsThomas G. Huntington, Robert W. Dudley, Glenn A. HodgkinsHistorical Ice-Out Dates for 29 Lakes in New England
Historical ice-out dates for 29 lakes in New England were compiled and are presented in this report. The length of record for the lakes ranges from 64 to 163 years, with an average of 108 years. Many lakes in New England had their latest recorded ice-out date in 1888. Ice-out dates for lakes are an important hydrologic data series for climate researchers and other interested parties.AuthorsGlenn A. Hodgkins, Ivan C. JamesSnowpack in Maine - Maximum Observed and March 1 Mean Equivalent Water Content
Historical snow data have been analyzed using geographic information systems software to determine the magnitude and distribution of maximum observed equivalent water content of snowpack for the State of Maine. Data from 109 sites with an average of 43 years of record were used to generate the map of maximum observed equivalent water content. Maximum observed water content ranged from less than 8AuthorsMarc C. Loiselle, Glenn A. HodgkinsObserved and Predicted Pier Scour in Maine
Pier-scour and related data were collected and analyzed for nine high river flows at eight bridges across Maine from 1997 through 2001. Six bridges had multiple piers. Fifteen of 23 piers where data were measured during a high flow had observed maximum scour depths ranging from 0.5 feet (ft) to 12.0 ft. No pier scour was observed at the remaining eight piers. The maximum predicted pier-scour depthAuthorsGlenn A. Hodgkins, Pamela J. LombardTrends in Streamflow, River Ice, and Snowpack for Coastal River Basins in Maine During the 20th Century
Trends over the 20th Century were examined in streamflow, river ice, and snowpack for coastal river basins in Maine. Trends over time were tested in the timing and magnitude of seasonal river flows, the occurrence and duration of river ice, and changes in snowpack depth, equivalent water content, and density. Significant trends toward earlier spring peak flow and earlier center-of-volume runoff daAuthorsRobert W. Dudley, Glenn A. HodgkinsEvaluation of the Effects of Development on Peak-Flow Hydrographs for Collyer Brook, Maine
The development of former agricultural or forested lands creates more impervious areas and drainage improvements that can increase the volume of runoff and decrease infiltration and ground-water recharge in a watershed. Drainage improvements also can improve the conveyance of runoff, decreasing the time of rise to peak flow between the start of a rainfall event and the peak surface-water runoff, aAuthorsRobert W. Dudley, Glenn A. Hodgkins, Alexander Mann, John Chisolm - News