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| Section 1 | Overview |
| Originator | NOAA/NWS/Office of Hydrologic Development, Hydrometeorological Design Studies Center |
| Title | Precipitation Frequency for Midwestern states, USA - NOAA Atlas 14 Volume 8 |
| Abstract | This GIS grid atlas contains precipitation frequency estimates for Midwestern states based on precipitation data collected between 1836-2013. This atlas supersedes information in Technical Memorandum NWS Hydro 35, published in 1977, NOAA Atlas 2, published in 1973 (Colorado), Technical Paper 40, published in 1961, and Technical Paper 49,published in 1964. The grids provide information for durations from 5 minutes through 60 days, and for return periods of 1 year through 1000 years. |
| Purpose | Precipitation frequency (PF) estimates are used as basic design criteria for a wide variety of hydraulic structures such as culverts, roadway drainages, bridges and small dams. This dataset is for the display and/or analyses of spatially distributed point PF estimates. |
| Time Period of Content Date | |
| Currentness Reference | Climatological period from which the point precipitation observations were taken. |
| Progress | Complete |
| Maintenance and Update Frequency | As needed |
| Spatial Extent of Data | |
| Bounding Coordinates | -97.272204
-89.382723
49.414537
43.433587 |
| Place Keywords | |
| Theme Keywords | Atmosphere > Precipitation > Precipitation Frequency |
| Theme Keyword Thesaurus | NASA GCMD Science Keywords |
| Access Constraints | n/a, no restrictions apply and data is public domain. |
| Use Constraints | Acknowledgement of NOAA/National Weather Service, Office of Hydrologic Development, Hydrometeorological Design Studies Center (HDSC) |
| Contact Person Information | ,
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| Browse Graphic | None available
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| Associated Data Sets | Technical Memorandum NWS Hydro 35, Five to 60-minutes Precipitation Frequency for Eastern and Central United States (1977).
Technical Memorandum NWS Hydro 35, Five to 60-minutes Precipitation Frequency for Eastern and Central United States (1977).
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| Section 2 | Data Quality |
| Attribute Accuracy | All attributes created were tested for internal consistency. In addition, thorough comparisons were conducted with NOAA Atlas 2 Volume 11, TP40, and TM Hydro35. All data were based on precipitation-reporting stations that had at least 20 years of hourly, and/or 30 years of daily precipitation data between 1836 and 2013. Similar quality assurance procedures were used with all input data sets. |
| Logical Consistency | |
| Completeness | Observed point precipitation values originated from a variety of sources. All station data were subjected to quality control checks by the National Climatic Data Center (NCDC) and the National Weather Service. |
| Horizontal Positional Accuracy | |
| Lineage | Datasets |
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Section 3
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Spatial Data Organization (not used in this metadata)
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| Section 4 | Coordinate System |
| Horizontal Coordinate Scheme | Universal Transverse Mercator |
| UTM Zone Number | 15 |
| Horizontal Datum | NAD83 |
| Horizontal Units | meters |
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| Section 5 | Attributes |
| Overview | Field name: precipitation frequency grid cell value; Definition: gridded precipitation frequency estimates; Definition source: NWS/OHD/HDSC.
Field name: Value; Valid values: 0 to 9999999; Definition: Grid cell precipitation in inches*1000; Definition source: HDSC.
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| Section 6 | Distribution |
| Publisher | |
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| Contact Person Information | ,
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| Distributor's Data Set Identifier | |
| Distribution Liability | Users must assume responsibility to determine the appropriate use of these data. |
| Ordering Instructions | NOAA/NWS/Office of Hydrologic Development
Silver Spring, MD 20910
Email: hdsc.questions@noaa.gov |
| Online Linkage | I AGREE
to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details.
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| Section 7 | Metadata Reference |
| Metadata Date | 07/09/2021 |
| Contact Person Information | ,
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