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Spatial and elevation points surveyed for indirect measurements of peak streamflow associated with flooding of September to November 2017 in Puerto Rico

Metadata Updated: October 29, 2023

This dataset contains topographic (horizontal and vertical) data for 20 sites, surveyed November 6 to November 28, 2017 as part of documentation of flooding that occurred in Puerto Rico during and after Hurricane Maria (September to November 2017). Hurricane Maria hit the Island of Puerto Rico on September 20, 2017 and was one of the deadliest storms in U.S. history. USGS personnel conducted topographic surveys at selected stream sites to facilitate hydraulic modeling of peak streamflows (or discharges) – termed indirect measurements – using published standard USGS methods. Indirect (post-flood) measurements are used to characterize flood peaks that could not be determined using direct methods (for example current-velocity meters, hydro-acoustic instruments or established stage-streamflow relations) because flood conditions exceeded the capabilities of those methods, streamgage sites could not be accessed during flooding, or safety issues precluded access by USGS personnel during flooding. Indirect measurement of peak streamflow involves site reconnaissance to identify a study reach; onsite identification and flagging of high water marks (HWMs) left by the flood; topographic surveys of HWMs, channel cross-section geometry, and affected structures (such as bridges or flooded roadways); and hydraulic modeling to compute peak streamflow using field data collected at the site.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date October 29, 2023
Publisher U.S. Geological Survey
Identifier USGS:611e50f0d34e40dd9c01968d
Data Last Modified 20220630
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Harvest Object Id af13a500-a631-4e03-b851-cf48812af768
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -67.3352,17.7487,-65.5472,18.6462
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 4d576168defd4d851e31effcc4ba679b109ddc0bc3cd04f71c6005d506e44dc3
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -67.3352, 17.7487, -67.3352, 18.6462, -65.5472, 18.6462, -65.5472, 17.7487, -67.3352, 17.7487}

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