Pamela Lombard
Pamela Lombard is a Supervisory Hydrologist in the New England Water Science Center.
She currently works on surface water hydrology issues such as streamflow statistics, hydraulic modeling, flood documentation and mapping, water availability/wateruse, and drought, and leads the hydraulic modeling team at the center.
Professional Experience
Supervisory Hydrologist, U.S. Geological Survey, New England Water Science Center, 2021 to Present
Hydrologist, U.S. Geological Survey, New England Water Science Center, 1999 to 2021
Education and Certifications
M.S. Hydrology, Oregon State University, 1997
B.S. Dartmouth College, 1990
Science and Products
Filter Total Items: 15
Filter Total Items: 32
Comparison of Observed and Predicted Abutment Scour at Selected Bridges in Maine
Maximum abutment-scour depths predicted with five different methods were compared to maximum abutment-scour depths observed at 100 abutments at 50 bridge sites in Maine with a median bridge age of 66 years. Prediction methods included the Froehlich/Hire method, the Sturm method, and the Maryland method published in Federal Highway Administration Hydraulic Engineering Circular 18 (HEC-18); the Melv
Authors
Pamela J. Lombard, Glenn A. Hodgkins
Comparison of peak-flow estimation methods for small drainage basins in Maine
Understanding the accuracy of commonly used methods for estimating peak streamflows is important because the designs of bridges, culverts, and other river structures are based on these flows. Different methods for estimating peak streamflows were analyzed for small drainage basins in Maine. For the smallest basins, with drainage areas of 0.2 to 1.0 square mile, nine peak streamflows from actual ra
Authors
Glenn A. Hodgkins, Charles Hebson, Pamela J. Lombard, Alexander Mann
August median streamflow on ungaged streams in Eastern Coastal Maine
Methods for estimating August median streamflow were developed for ungaged, unregulated streams in eastern coastal Maine. The methods apply to streams with drainage areas ranging in size from 0.04 to 73.2 square miles and fraction of basin underlain by a sand and gravel aquifer ranging from 0 to 71 percent. The equations were developed with data from three long-term (greater than or equal to 10 ye
Authors
Pamela J. Lombard
Drought conditions in Maine, 1999-2002: A historical perspective
Hydrologic drought can be defined as reduced streamflow, declining ground-water levels, and (or) reductions in lake or reservoir levels. Monthly precipitation totals, annual 7-day low-flow surface-water recurrence intervals, and month-end ground-water levels from drought years 1999-2002 show that 1999-2002 was the driest period of hydrologic drought in more than 50 years of record in Maine. Record
Authors
Pamela J. Lombard
Methods for Estimating Streamflow Statistics for Ungaged Streams in Maine
No abstract available.
Authors
P.J. Lombard
August Median Streamflow on Ungaged Streams in Eastern Aroostook County, Maine
Methods for estimating August median streamflow were developed for ungaged, unregulated streams in the eastern part of Aroostook County, Maine, with drainage areas from 0.38 to 43 square miles and mean basin elevations from 437 to 1,024 feet. Few long-term, continuous-record streamflow-gaging stations with small drainage areas were available from which to develop the equations; therefore, 24 parti
Authors
Pamela J. Lombard, Gary D. Tasker, Martha G. Nielsen
Observed 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 depth
Authors
Glenn A. Hodgkins, Pamela J. Lombard
Science and Products
Filter Total Items: 15
Filter Total Items: 32
Comparison of Observed and Predicted Abutment Scour at Selected Bridges in Maine
Maximum abutment-scour depths predicted with five different methods were compared to maximum abutment-scour depths observed at 100 abutments at 50 bridge sites in Maine with a median bridge age of 66 years. Prediction methods included the Froehlich/Hire method, the Sturm method, and the Maryland method published in Federal Highway Administration Hydraulic Engineering Circular 18 (HEC-18); the Melv
Authors
Pamela J. Lombard, Glenn A. Hodgkins
Comparison of peak-flow estimation methods for small drainage basins in Maine
Understanding the accuracy of commonly used methods for estimating peak streamflows is important because the designs of bridges, culverts, and other river structures are based on these flows. Different methods for estimating peak streamflows were analyzed for small drainage basins in Maine. For the smallest basins, with drainage areas of 0.2 to 1.0 square mile, nine peak streamflows from actual ra
Authors
Glenn A. Hodgkins, Charles Hebson, Pamela J. Lombard, Alexander Mann
August median streamflow on ungaged streams in Eastern Coastal Maine
Methods for estimating August median streamflow were developed for ungaged, unregulated streams in eastern coastal Maine. The methods apply to streams with drainage areas ranging in size from 0.04 to 73.2 square miles and fraction of basin underlain by a sand and gravel aquifer ranging from 0 to 71 percent. The equations were developed with data from three long-term (greater than or equal to 10 ye
Authors
Pamela J. Lombard
Drought conditions in Maine, 1999-2002: A historical perspective
Hydrologic drought can be defined as reduced streamflow, declining ground-water levels, and (or) reductions in lake or reservoir levels. Monthly precipitation totals, annual 7-day low-flow surface-water recurrence intervals, and month-end ground-water levels from drought years 1999-2002 show that 1999-2002 was the driest period of hydrologic drought in more than 50 years of record in Maine. Record
Authors
Pamela J. Lombard
Methods for Estimating Streamflow Statistics for Ungaged Streams in Maine
No abstract available.
Authors
P.J. Lombard
August Median Streamflow on Ungaged Streams in Eastern Aroostook County, Maine
Methods for estimating August median streamflow were developed for ungaged, unregulated streams in the eastern part of Aroostook County, Maine, with drainage areas from 0.38 to 43 square miles and mean basin elevations from 437 to 1,024 feet. Few long-term, continuous-record streamflow-gaging stations with small drainage areas were available from which to develop the equations; therefore, 24 parti
Authors
Pamela J. Lombard, Gary D. Tasker, Martha G. Nielsen
Observed 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 depth
Authors
Glenn A. Hodgkins, Pamela J. Lombard