Updating U.S. Precipitation Frequency Estimates for the State of Texas

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General Information
Study Number: TPF-5(344)
Lead Organization: Federal Highway Administration
Solicitation Number: 1421
Partners: Harris County Texas Flood Control District, City of Austin, Watershed Protection Department, Brazos River Authority, TX
Status: Closed
Est. Completion Date:
Contract/Other Number:
Last Updated: Jun 04, 2021
Contract End Date:
Financial Summary
Contract Amount:
Total Commitments Received: $1,005,000.00
100% SP&R Approval: Approved
Contact Information
Lead Study Contact(s): Kornel Kerenyi
kornel.kerenyi@dot.gov
Phone: 202-493-3142
FHWA Technical Liaison(s): Kornel Kerenyi
kornel.kerenyi@dot.gov
Phone: 202-493-3142
Study Champion(s): Chao Huang
c.huang.ctr@dot.gov
Phone: 202--493-3098
Organization Year Commitments Technical Contact Name Funding Contact Name Contact Number Email Address
Brazos River Authority 2016 $15,000.00 Brad Brunett David Pamplin david.pamplin@dot.gov
City of Austin, Watershed Protection Department 2016 $50,000.00 Karl McArthur McArthur Karl McArthur McArthur Karl.McArthur@austintexas.gov
Harris County Texas Flood Control District 2016 $200,000.00 Steve Fitzgerald David Pamplin david.pamplin@dot.gov
Texas Department of Transportation 2016 $370,000.00 Stan Hopfe Ned Mattila 512-416-4727 ned.mattila@txdot.gov
Texas Department of Transportation 2017 $370,000.00 Stan Hopfe Ned Mattila 512-416-4727 ned.mattila@txdot.gov

Study Description

National Oceanic and Atmospheric Administration’s (NOAA’s) National Weather Service (NWS) proposes updating precipitation frequency estimates for the states not included or in process for publication in the following Volumes of NOAA Atlas 14 “Precipitation-Frequency Atlas of the United States”:

Volume 1 AZ, NM, NV, UT

Volume 2 DE, DC, IL, IN, KY, MD, NC, NJ, OH, PA, SC, TN, VA, WV

Volume 3 PR, VI

Volume 4 HI

Volume 5 Pacific Islands (selected)

Volume 6 CA

Volume 7 AK

Volume 8 CO, IA, KS, MI, MN, MO, ND, NE, OK, SD, WI

Volume 9 AL, AR, FL, GA, LA, MS

Volume 10 CT, MA, ME, VT, NH, NY, RI, VT.

Precipitation frequency estimates for the state of Texas will be published as Volume 11 on the web at www.nws.noaa.gov/ohd/hdsc.

The new NOAA Atlas 14 estimates are greatly improved in terms of accuracy, reliability and resolution. They are derived using improved data in terms of period of record and station density, state of the art statistical techniques, and spatial interpolation method that accounts for variation in terrain.

Objectives

The purpose of this study is to determine precipitation frequency estimates for the state of Texas for durations of 5-minute through 60-day at average recurrence intervals (ARIs) of 1-year through 1,000-year. The estimates and associated bounds of 90% confidence intervals will be provided at 30 arc-sec resolution (approximately 800 x 800 m; varies with latitude). The study results will be published as volumes of NOAA Atlas 14, a wholly web based publication available at www.nws.noaa.gov/ohd/hdsc. The publication will include the artifacts provided in previous NOAA Atlas 14 Volumes, including access through the Precipitation Frequency Data Server, base grids in standard formats together with error estimates, electronic copies of maps, charts of seasonal distributions and probabilistic temporal distributions of heavy precipitation, and detailed documentation. Updated areal reduction factors, which are needed to calculate analogous areal precipitation frequency estimates, will be developed as a separate appendix to NOAA Atlas 14 for the entire U.S. They include regional frequency analysis based on L-moments including error estimates, a combination of PRISM based techniques and CRAB for spatial interpolation, techniques for the analysis of climatic trend, temporal distribution and seasonality, internal consistency checks and variety of automated processes designed to enhance productivity. Intermediate results in the form of hourly and daily estimates at several ARIs will be distributed for peer review as will the final documentation.

Scope of Work

The attached proposed Statement of Work by NOAA provides detailed information on the following:

Task 1 - Data Collection and Quality Control

Task 2 – Regionalization and calculation of regional statistics

Task 3 - Frequency distribution selection and frequency calculations

Task 4 - Estimates for 5-minute and 10-minute durations

Task 5 - Internal consistency at observing locations

Task 6 - Error estimates for DDF/IDF curves

Task 7 - Rainfall frequency estimates with confidence limits

Task 8 - Spatial interpolation and consistency

Task 9 - Temporal distributions

Task 10.- Peer review

Task 11 - Documentation

Task 12 - Final deliverables

Task 13 - Status Reporting

Comments

Commitments required: $1,000,000.00

Documents Attached
Title File/Link Type Privacy Download
Final Report for NOAA Atlas 14 - Volume 11 - TX Atlas14_Volume11.pdf Final Report Public
Approved Waiver Approval of SP&R Waiver Pooled Fund Solicitation #1421.pdf Memorandum Public
Acceptance Memo-TPF-5(344) Acceptance Memo-TPF-5(344).pdf Memorandum Public
Closeout Memo TPF-5(344) Closeout Memo.pdf Memorandum Public
Waiver Request RE_ Waiver Request_ Solicitation 1421 _Updating U.S. Precipitation Frequency Estimates for the Texas Other Public
Progress Report: April - June 2016 PR TPF-5(344) for Apr to Jun 2016.pdf Quarterly Progress Report Public
Progress Report: July - September 2016 PR TPF-5(344) for Jul to Sep 2016.pdf Quarterly Progress Report Public
Progress Report: October - December 2016 PR TPF-5(344) for Oct to Dec 2016.pdf Quarterly Progress Report Public
Progress Report: January - March 2017 PR TPF-5(344) for Jan to Mar 2017.pdf Quarterly Progress Report Public
Progress Report: April - June 2017 PR TPF-5(344) for Apr to Jun 2017.pdf Quarterly Progress Report Public
Progress Report: July - September 2017 PR TPF-5(344) for Jul to Sep 2017.pdf Quarterly Progress Report Public
Progress Report: October - December 2017 PR TPF-5(344) for Oct to Dec 2017.pdf Quarterly Progress Report Public
Progress Report: January - March 2018 PR TPF-5(344) for Jan to Mar 2018.pdf Quarterly Progress Report Public
Progress Report: April - June 2018 PR TPF-5(344) for Apr to Jun 2018.pdf Quarterly Progress Report Public
Progress Report: July - September 2018 PR TPF-5(344) for Jul to Sep 2018.pdf Quarterly Progress Report Public

No document attached.

Updating U.S. Precipitation Frequency Estimates for the State of Texas

General Information
Study Number: TPF-5(344)
Lead Organization: Federal Highway Administration
Solicitation Number: 1421
Partners: Harris County Texas Flood Control District, City of Austin, Watershed Protection Department, Brazos River Authority, TX
Status: Closed
Est. Completion Date:
Contract/Other Number:
Last Updated: Jun 04, 2021
Contract End Date:
Financial Summary
Contract Amount:
Total Commitments Received: $1,005,000.00
100% SP&R Approval:
Contact Information
Lead Study Contact(s): Kornel Kerenyi
kornel.kerenyi@dot.gov
Phone: 202-493-3142
FHWA Technical Liaison(s): Kornel Kerenyi
kornel.kerenyi@dot.gov
Phone: 202-493-3142
Commitments by Organizations
Organization Year Commitments Technical Contact Name Funding Contact Name Contact Number Email Address
Brazos River Authority 2016 $15,000.00 Brad Brunett David Pamplin david.pamplin@dot.gov
City of Austin, Watershed Protection Department 2016 $50,000.00 Karl McArthur McArthur Karl McArthur McArthur Karl.McArthur@austintexas.gov
Harris County Texas Flood Control District 2016 $200,000.00 Steve Fitzgerald David Pamplin david.pamplin@dot.gov
Texas Department of Transportation 2016 $370,000.00 Stan Hopfe Ned Mattila 512-416-4727 ned.mattila@txdot.gov
Texas Department of Transportation 2017 $370,000.00 Stan Hopfe Ned Mattila 512-416-4727 ned.mattila@txdot.gov

Study Description

Study Description

National Oceanic and Atmospheric Administration’s (NOAA’s) National Weather Service (NWS) proposes updating precipitation frequency estimates for the states not included or in process for publication in the following Volumes of NOAA Atlas 14 “Precipitation-Frequency Atlas of the United States”:

Volume 1 AZ, NM, NV, UT

Volume 2 DE, DC, IL, IN, KY, MD, NC, NJ, OH, PA, SC, TN, VA, WV

Volume 3 PR, VI

Volume 4 HI

Volume 5 Pacific Islands (selected)

Volume 6 CA

Volume 7 AK

Volume 8 CO, IA, KS, MI, MN, MO, ND, NE, OK, SD, WI

Volume 9 AL, AR, FL, GA, LA, MS

Volume 10 CT, MA, ME, VT, NH, NY, RI, VT.

Precipitation frequency estimates for the state of Texas will be published as Volume 11 on the web at www.nws.noaa.gov/ohd/hdsc.

The new NOAA Atlas 14 estimates are greatly improved in terms of accuracy, reliability and resolution. They are derived using improved data in terms of period of record and station density, state of the art statistical techniques, and spatial interpolation method that accounts for variation in terrain.

Objectives

The purpose of this study is to determine precipitation frequency estimates for the state of Texas for durations of 5-minute through 60-day at average recurrence intervals (ARIs) of 1-year through 1,000-year. The estimates and associated bounds of 90% confidence intervals will be provided at 30 arc-sec resolution (approximately 800 x 800 m; varies with latitude). The study results will be published as volumes of NOAA Atlas 14, a wholly web based publication available at www.nws.noaa.gov/ohd/hdsc. The publication will include the artifacts provided in previous NOAA Atlas 14 Volumes, including access through the Precipitation Frequency Data Server, base grids in standard formats together with error estimates, electronic copies of maps, charts of seasonal distributions and probabilistic temporal distributions of heavy precipitation, and detailed documentation. Updated areal reduction factors, which are needed to calculate analogous areal precipitation frequency estimates, will be developed as a separate appendix to NOAA Atlas 14 for the entire U.S. They include regional frequency analysis based on L-moments including error estimates, a combination of PRISM based techniques and CRAB for spatial interpolation, techniques for the analysis of climatic trend, temporal distribution and seasonality, internal consistency checks and variety of automated processes designed to enhance productivity. Intermediate results in the form of hourly and daily estimates at several ARIs will be distributed for peer review as will the final documentation.

Scope of Work

The attached proposed Statement of Work by NOAA provides detailed information on the following:

Task 1 - Data Collection and Quality Control

Task 2 – Regionalization and calculation of regional statistics

Task 3 - Frequency distribution selection and frequency calculations

Task 4 - Estimates for 5-minute and 10-minute durations

Task 5 - Internal consistency at observing locations

Task 6 - Error estimates for DDF/IDF curves

Task 7 - Rainfall frequency estimates with confidence limits

Task 8 - Spatial interpolation and consistency

Task 9 - Temporal distributions

Task 10.- Peer review

Task 11 - Documentation

Task 12 - Final deliverables

Task 13 - Status Reporting

Comments

Commitments required: $1,000,000.00

Title File/Link Type Private
Final Report for NOAA Atlas 14 - Volume 11 - TX Atlas14_Volume11.pdf Final Report Public
Approved Waiver Approval of SP&R Waiver Pooled Fund Solicitation #1421.pdf Memorandum Public
Acceptance Memo-TPF-5(344) Acceptance Memo-TPF-5(344).pdf Memorandum Public
Closeout Memo TPF-5(344) Closeout Memo.pdf Memorandum Public
Waiver Request RE_ Waiver Request_ Solicitation 1421 _Updating U.S. Precipitation Frequency Estimates for the Texas Other Public
Progress Report: April - June 2016 PR TPF-5(344) for Apr to Jun 2016.pdf Quarterly Progress Report Public
Progress Report: July - September 2016 PR TPF-5(344) for Jul to Sep 2016.pdf Quarterly Progress Report Public
Progress Report: October - December 2016 PR TPF-5(344) for Oct to Dec 2016.pdf Quarterly Progress Report Public
Progress Report: January - March 2017 PR TPF-5(344) for Jan to Mar 2017.pdf Quarterly Progress Report Public
Progress Report: April - June 2017 PR TPF-5(344) for Apr to Jun 2017.pdf Quarterly Progress Report Public
Progress Report: July - September 2017 PR TPF-5(344) for Jul to Sep 2017.pdf Quarterly Progress Report Public
Progress Report: October - December 2017 PR TPF-5(344) for Oct to Dec 2017.pdf Quarterly Progress Report Public
Progress Report: January - March 2018 PR TPF-5(344) for Jan to Mar 2018.pdf Quarterly Progress Report Public
Progress Report: April - June 2018 PR TPF-5(344) for Apr to Jun 2018.pdf Quarterly Progress Report Public
Progress Report: July - September 2018 PR TPF-5(344) for Jul to Sep 2018.pdf Quarterly Progress Report Public
No document attached.

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