SUBCOMMITTEE ON HYDROLOGY

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SUBCOMMITTEE ON HYDROLOGY

• Overall Goal from purpose statement
• To improve the availability and reliability of
  (surface water) information needed for hazard
  mitigation, water supply and water use
  management, and environmental protection

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SUBCOMMITTEE ON HYDROLOGY

• Meetings held Quarterly
• Winter and Spring 2004 in Washington, DC
• July 15, 2004 in Denver, CO
• Next Meeting October 14, 2004 in Washington, DC

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SUBCOMMITTEE ON HYDROLOGY

• Present Officers
• Donald Frevert, BOR, Chair
• S. Samuel Lin, FERC, Vice-Chair
• Terms Extend through September, 2005

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SUBCOMMITTEE ON HYDROLOGY

• Current Member Organizations
• Agricultural Research Service
• American Forests
• Association of State Floodplain Managers
• Bureau of Land Management
• Bureau of Reclamation
• Defenders of Property Rights
• Federal Emergency Management Agency
• Federal Energy Regulatory Commission
• Federal Highway Administration

• Current Member Organizations (continued)
• National Hydrologic Warning Council
• National Science Foundation
• National Weather Service
• Natural Resources Conservation Service
• US Army Corps of Engineers
• US Environmental Protection Agency
• US Forest Service
• US Geological Survey
• Indicates inactive organization

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SUBCOMMITTEE ON HYDROLOGY

• Current Work Groups
• Hydrologic Frequency Analysis Work Group,
• Will Thomas (Michael Baker and Associates),
  Chair
• Hydrologic Modeling Work Group,
• Donald Frevert (BOR), Chair
• Hydrologic Radio Frequency Work Group,
• Scott Jackson (NWS), Chair
• Satellite Telemetry Interagency Work Group,
• Ernest Dryer (USGS), Chair

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SUBCOMMITTEE ON HYDROLOGY

• Hydrologic Frequency Analysis Work Group
• Most Recent Meetings July 24, 2003 and January
  28, 2004
• Next Meeting Planned for October, 2004 in
  Alexandria, VA
• Work group formed to address three main issues
• Preparing a list of Frequently Asked Questions
  and Answers about Bulletin 17B - Guidelines For
  Determining Flood Flow Frequency (Interagency
  Advisory Committee on Water Data, 1982)
• Developing guidance for Flood Frequency
  Estimates on ungaged watersheds
• Developing guidance for Flood Frequency
  Analysis for regulated watersheds
• List of Frequently Asked Questions and Answers
  on Bulletin 17B posted on the work group web
  site
• Paper entitled Evaluation of Flood Frequency
  Estimates for Ungaged Watershed posted on the
  work group web site

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SUBCOMMITTEE ON HYDROLOGY

• Hydrologic Frequency Analysis Work Group
  (continued)
• Benefit Provides a forum for discussion of
  flood frequency analysis issues
  among experts throughout the
  country
• Ongoing Tasks
• Preparing report on flood frequency analysis
  for regulated watersheds
• Making references, cited in Bulletin 17B,
  available on work group web site
• Investigating update of skew estimation
  procedures for Bulletin 17B
• Investigating possible code of ethics for
  hydrologic frequency analysis

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SUBCOMMITTEE ON HYDROLOGY

• Hydrologic Modeling Work Group
• Most Recent Meeting January, 2004 in Denver
• Next Meeting Fall, 2004 Conference Call
• Held 2nd Federal Interagency Hydrologic
  Modeling Conference
• July 28 August 1, 2002 in Las Vegas, NV
• Attended by approximately 350 participants from
• Federal, State and Local Governments
• Private Industry
• Stakeholder Groups
• Universities or Research Institutes
• Approximately 160 Technical Presentations and
  40 Posters
• Five Short Courses on State-of-the-Art
  Technology all well attended

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SUBCOMMITTEE ON HYDROLOGY

• Hydrologic Modeling Work Group (continued)
• Next Hydrologic Modeling Conference Scheduled
  for
• April 2-6, 2006
• Initial planning now complete and hotel
  arrangements made
• Format will be joint conference with Federal
  Sedimentation Conference
• Call for papers will come out in October, 2004
• Abstracts will be due in May, 2005

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SUBCOMMITTEE ON HYDROLOGY

• Hydrologic Radio Frequency Work Group
• Narrow Banding of VHF and UHF bands underway
• Coordinated Agreement in Place with Canada
• Coordinated Agreement with Mexico being
  Negotiated

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SUBCOMMITTEE ON HYDROLOGY

• Satellite Telemetry Interagency Work Group
• Charted jointly by the Office of the Federal
  Coordinator for Meteorology(OFCM) and the
  Advisory Committee on Water Information (ACWI).
• Reports to Committee for Environmental Services,
  Operations and Research Needs ( C/ESORN) of OFCM
  and Hydrology Subcommittee of ACWI.
• Acts as a user's group for major users of the
  GOES DCS.
• Coordinates funding for user-desired improvements
  to the GOES DCS.
• Members include BOR, USGS, Corps of Engineers,
  BLM, Forest Service , NOAA, and others.
• Meets two to three times a year, two meetings so
  far in 2004.

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SUBCOMMITTEE ON HYDROLOGY

• Satellite Telemetry Interagency Work
  Group(cont.)
• Major Activities in 2004
• Terms of Reference
• Updated terms of reference
• URL http//water.usgs.gov/datarelay/stiwg/StiwgTo
  r-new.html
• High Data Rate DCPs
• Finalized Plan for transition to High Data
  Rate(HDR) DCPS
• URL http//water.usgs.gov/datarelay/stiwg/FinalHD
  RPlan.html
• Goes DCS Backup
• Participated in NESDIS Study
• Has reservations about site selection methodology
  which will be reported to the Subcommittee on
  Hydrology at its next meeting

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SUBCOMMITTEE ON HYDROLOGY

• Satellite Telemetry Interagency Work Group
• Major Activities in 2004 ( cont. )
• GOES DCS Improvements
• Members participated in NESDIS-sponsored meetings
  with manufacturers of equipment for GOES DCS
• Helped develop a list of long-term potential
  improvements that included
• Reduction of the the frequency range currently
  used by HDR DCPs by ½ which would double the
  capacity of GOES DCS.
• Use of the GOES DCS interrogation link for 2-way
  communications with remote sites.

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SUBCOMMITTEE ON HYDROLOGY

• Proposed Motion on Maintenance of the Present
  Streamgage Network
• Background
• Importance of streamflow data to protection of
  life and property as well as effective water
  resources management.
• Network is heavily funded by USGS partners and
  this funding is subject to substantial year to
  year fluctuations. The result has been loss of
  some key stations in recent years.
• Reliance of other agencies and organizations on
  this data.
• Recommendation
• Maintain the program at or above its present
  level
• USGS remain the agency responsible for operation

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SUBCOMMITTEE ON HYDROLOGY

• Key Websites
• http//water.usgs.gov/wicp/acwi/hydrology/index.
  html for general
  subcommittee information
  
• http//water.usgs.gov/wicp/acwi/hydrology/hydrol
  _members.html for rosters
• http//water.usgs.gov/wicp/acwi/hydrology/mtscon
  fwkshops/index.html for conference and workshop
  information