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  2. USGS Caribbean-Florida Water Science Center
  3. Public Data Releases 2021
  4. Data Files for the Development of Regression Equations for the Estimation of the Magnitude and Frequency of Floods at Rural, Unregulated Gaged and Ungaged Streams in Puerto Rico through Water Year 2017 (ver. 1.1, September 2021)
  5. Regions for regional regression equations

Regions for regional regression equations

Dates

Publication Date
Time Period
2020

Citation

Ryan, P.J., and Hazelbaker, C.L., 2021, Data Files for the Development of Regression Equations for Estimation of the Magnitude and Frequency of Floods at Rural, Unregulated Gaged and Ungaged Streams in Puerto Rico through Water Year 2017: U.S. Geological Survey data release, https://doi.org/10.5066/P91XT14B.

Summary

Regional regression equations were calculated in Puerto Rico with generalized least squares techniques to estimate flood frequency statistics at ungaged locations using drainage area as the only explanatory variable. The island was divided into 2 regions to minimize residuals. The region division that resulted in lower and more balanced residuals runs primarily north-south near the center of the island, mostly along an 8-digit hydrologic unit code (HUC8) boundary. The division line runs through a HUC8 polygon on the southern end of the island, but care was taken to include entire watersheds and consideration was given where hydrologic and physiographic properties differed. This data release includes geographic information system files [...]

Contacts

Point of Contact :
Patrick J Ryan, Caribbean-Florida Water Science Center
Originator :
Patrick J Ryan, Cody L Hazelbaker
Metadata Contact :
Patrick J Ryan, Caribbean-Florida Water Science Center
Publisher :
U.S. Geological Survey
SDC Data Owner :
Caribbean-Florida Water Science Center
USGS Mission Area :
Water Resources
Distributor :
U.S. Geological Survey - ScienceBase

Attached Files

Click on title to download individual files attached to this item.

PR_Regions1_2_poly.zip
“Puerto Rico regression region polygon files” 		670.45 KB application/zip
Regions_for_regional_regression_equations.xml
“Puerto Rico regression region metadata”
Original FGDC Metadata
View 		13.2 KB application/fgdc+xml

Purpose

The previous update to flood frequency estimates and regional regression equation development in Puerto Rico was published using annual peak-flow data to 1994. This updated study utilizes newer methods outlined in Bulletin 17C and the most recent basin characteristic data to estimate the magnitude and frequency of floods and calculate new regional regression equations and regions.

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  • USGS Caribbean-Florida Water Science Center

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