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on April 10, 2011 at 3:22:37 pm

UCF Rainfall Analysis

This site will be closed during the peer review process (projected completion April 2011). All links from this page are currently disabled. You can request and get access to the files during this time (use Request Access).

UCF Rainfall Analysis
Overview and Methodology Documentation
List of Sites (Analysis links)
Return Period Analysis Results
Kriging Analysis Results
Additional Files and Links
References and Other Reports Links
Authors and Researchers
Visitors

The rainfall analysis and rainfall analysis software was produced as funded projects by the Southwest Florida Water Management District and the United States Geologic Survey by the Stormwater Management Institute at University of Central Florida. They are provided here as a service to engineers and technicians needing the results of this analysis.

Overview and Methodology Documentation

Deisgn Storm Rainfall Depths An Overview April 2011.docx - Latest Summary Overview with new Krig parameters and example.

Summary of the Rainfall Analysis Methodology
Design Storm Rainfall Depths Proposal.pdf -
Comparison of Rainfall Iso Methods.doc - Overview of various ISO line generation methods with results using rainfall data.
FEMA Rainfall Literature Review.pdf

List of Sites (Analysis links)

List of Sites - Analysis Results - This page contains all sites with links to the full analysis of each site. Quality control information, site results, and distribution results are all included.
Shape Files - The final results and rainfall contours as ESRI Shape Files.
Autcad DXF Files - The DXF Export of all contours (Autcad DXF format).
Surfer SRF Files - All Files in Surfer format.
Surfer Grid Files - The Grid Files for the Analysis, Surfer and AASCII format.
Surfer Post Files - Post maps showing values and locations used in analysis.
Google Earth (KML) Demo - See how the maps look in Google Earth.

Return Period Analysis Results

For each return period listed a table of the predicted maximum for each duration is shown. The predicted maximum is the value that is determined by (1) fitting the annual actual maxima to a distribution, and (2) fitting these distribution results to a linear regression model. The raw maxima and curve fit parameters are shown in the analysis results for each site in the List of Sites - Analysis Results.

Master Spreadsheet: StationCoordinates.xls

Stations used in Analysis (n >= 20) Spreadsheet: StationCoordinatesNGT20.xls

Kriging Analysis Results

Kriging Analysis Results - The full rainfall distribution results were fit to state isohyetal plots using standard kriging techniques. Each of the results for all analyzed durations and return periods are included here. To access the full folder click here StandardKriging
Nugget Kriging (1) - As part of the peer review process Nugget Kriging was a recommendation to smooth the curves. In standard kriging, iso lines are forced to go through all geographic points at the actual value of the point. This causes a tent post effect. In the case of rainfall data, these values do have a natural variance. An error variance of 0.5 and a micro variance on 0.5 was used in the kriging analysis utilizing a second variogram specifying these effects. The result of the smoothed variograms are in the linked folders. A full explanation of the analysis is included on the page - Correcting for Rainfall Iso Variance Using the Nugget Effect.

Additional Files and Links

Rainfall Analysis Software - This is the software, source code, and support files for the software written to perform these analyses. Links to other software to support the analysis are also included.

SMADA Documentation - This is the documentation to Stormwater Management and Design Aid - a Windows software for analysis and hydrograph generation. SMADA is now open source, and I am in the process of posting code files.

SMADA Code Files - Here is where to find the code files for the SMADA program.

Other Program Source Code Files - Source code to other files such as RainDigitizer, Rainplot, etc...

Linda Eaglin Thesis - Development of the Intensity Duration Frequency Curves for the State of Florida