Digital Data Sets of Depth-Duration Frequency of Precipitation For OklahomaEntry ID: USGS_OFR_99-463
Abstract: These geospatial data sets were produced as part of a regional precipitation
frequency analysis for Oklahoma. The data sets consist of surface grids of
precipitation depths for seven frequencies (expressed as recurrence intervals
of 2-, 5-, 10-, 25-, 50-, 100-, and 500-years) and 12 durations (15-, 30-, and
60-minutes; 1-, 2-, 3-, 6-, 12-, and 24-hours; and 1-, 3-, and 7-days).
Eighty-four ... depth-duration-frequency surfaces were produced from
precipitation-station data. Precipitation-station data from which the surfaces
were interpolated and contour lines derived from each surface also are
included. Contour intervals vary from 0.05 to 0.5 inch.
Data were used from precipitation gage stations with at least 10 years of
record within Oklahoma and a zone extending about 50 kilometers into bordering
states. Three different rain gage networks provided the data (15-minute,
1-hour, and 1-day). Precipitation annual maxima (depths) were determined from
the station data for each duration for 110 15-minute, 141 hourly, and 413 daily
stations. Statistical methods were used to estimate precipitation depths for
each duration-frequency at each station. These station depth-duration-frequency
estimates were interpolated to produce continuous grids with grid-cell spacing
of 2,000 meters. Contour lines derived from these surfaces (grids) were used to
produce the maps in the "Depth-Duration Frequency of Precipitation for
Oklahoma," by R.L. Tortorelli, Alan Rea, and W.H. Asquith, U.S. Geological
Survey Water-Resources Investigations Report 99-4232. The geospatial data sets
are presented in digital form for use with geographic information systems.
These geospatial data sets may be used to determine an interpolated value of
depth-duration-frequency of precipitation for any point in Oklahoma.
[Summary provided by USGS.]
Data Set Citation
Dataset Originator/Creator: Alan Rea and Robert L. Tortorelli
Dataset Title: Digital Data Sets of Depth-Duration Frequency of Precipitation For Oklahoma
Dataset Series Name: USGS Open-File Report
Dataset Release Date: 1999
Dataset Release Place: Oklahoma City, Oklahoma
Dataset Publisher: U.S. Geological Survey
Issue Identification: USGS OFR 99-463
Data Presentation Form: GIS mapOnline Resource: http://water.usgs.gov/GIS/metadata/usgswrd/XML/ofr99-463_county.xml
Access Constraints None
Use Constraints These data are designed for regional analyses appropriate to the
2,000-meter grid cell size of the surfaces from which these
contours are derived.
Data Set Progress
Distribution Media: Online
Distribution Format: Arc/Info
Fees: No fees
Distribution Media: Online
Distribution Format: ASCII
Fees: No fees
Role: DIF AUTHOR
Role: TECHNICAL CONTACT
Phone: (405)843-7570 (voice)
Email: ahrea at usgs.gov
U.S. Geological Survey 202 NW 66th ST, Bld. 7
City: Oklahoma City
Province or State: OK
Postal Code: 73116
Asquith, W.H., 1998, Depth-duration frequency of precipitation for Texas: U.S. Geological Survey Water-Resources Investigations Report 98-4044, 107 p.
Federal Geographic Data Committee, 1994, Content standards for digital
geospatial metadata (June 8): Federal Geographic Data Committee, Washington, D.C., 78 p. URL:
Rea, Alan and Becker, C.J., 1997, Digital atlas of Oklahoma: U.S. Geological Survey Open-File Report 97-23, 2 CD-ROMs.
Snyder, J.P., 1987, Map projections--A working manual: U.S. Geological Survey Professional Paper 1395, 383 p.
Tortorelli, R.L., Rea, Alan, and Asquith, W.H., 1999, Depth-duration frequency of precipitation for Oklahoma: U.S. Geological Survey Water-Resources Investigations Report 99-4232, 113 p.
U.S. Geological Survey, 1990, Digital line graphs from 1:2,000,000-scale maps, data users guide 3: U.S. Geological Survey National Mapping Program Technical Instruction, 70 p.
Creation and Review Dates
DIF Creation Date: 2004-08-16
Last DIF Revision Date: 2011-07-01