Colorado Ice Jams and CRREL s Ice Jam Database CRREL Ice Engineering Group
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1 Colorado Ice Jams and CRREL s Ice Jam Database CRREL Ice Engineering Group Presented by, Carrie Vuyovich, Ph.D., P.E. Research Hydraulic Engineer ERDC Cold Regions Research and Engineering Laboratory, Hanover NH May 2017
2 CRREL Ice Jam Database History Background Data Sources & Development Colorado Ice Jams Records for CO in IJDB General overview Some statistics Overview
3 Ice Jam Database Overview Developed at CRREL in 1992 Provide timely ice jam information to USACE Goal to coordinate response to and assist in long-term planning for ice jam flooding Over 22,600 ice jams Data publically available through Web
4 Data Sources for Ice Jam Database National Weather Service (NWS) products (review roughly 2,500 products per hour) Real-time river water surface elevation, USGS & USACE Online news sources First hand observers (locals & emergency managers)
5 Review ~2500 NWS products/hour Building the IJDB Filter ~10,000 reports/year with ice Local responders Corps EMs Select ~1,000 reports/year with river ice News reports CRREL Automated Processing Enter into IJDB after manual review Average number of jams per year: Max number of jams: 611 in 2004 Min number of jams: 58 in 2016
6 How to Report an Ice Jam Observation Safety First! Refer to Ice Observer Training
7 How to Make an Ice Jam Observation IJDB website upgrades Plan to add the Ice Report as a online fillable form Until then, contact and to: Joseph Rocks Research Hydraulic Engineer ERDC/CRREL (603) joseph.s.rocks@usace.army.mil
8 Ice Jam Database website
9 Text Query Ice Jam Database website
10 Ice Jam Database website Map View and Query
11 IJDB: Tool for Project Planning Currently over 22,600 ice jams recorded in IJDB.
12 IJDB: Tool for Project Planning Planning and O&M The number of ice jams varies significantly from year to year. Need to continue collecting data on these trends to facilitate future project planning and O&M.
13 Tech Transfer Weekly River Ice Updates Every Wednesday, Nov to Jun Released prior to UOC briefing at 0830 EST Corps HQ, UOC, District & Division EM s Outreach and technical assistance New Hampshire, Colorado, Ohio, New York
14 Improving the IJDB Working with NWS to improve ice jam nomenclature in reports Cooperation with States Montana Silver Jackets. Researched and updated entries of historic jams to reduce temporal and spatial gaps in data record Additional Silver Jackets outreach and technical assistance projects in CO, NH, OH, and NY. Oracle, web site development
15 Support to Emergency Management CRREL can provide technical assistance through a request made to applicable USACE District. Typically when an ice jam has occurred, but can also happen before. Advance Measures vs Emergency Measures
16 IJDB: Tool for Emergency Management Gale River, Sugar Hill NH Dec 2009 Midwinter breakup on Gale River, ¼ mile long breakup jam Town of Sugar Hill requested USACE NAE technical assistance CRREL reviewed IJDB, 5 historic ice jams since 1972 CRREL staff met local officials onsite, discussed possible mitigation techniques
17 IJDB: Tool for Emergency Management Kennebec River, near Augusta ME Jan 2010 Midwinter breakup on Kennebec River Flooding of businesses in Hallowell, ME Locals requested USACE NAE technical assistance Coast Guard icebreakers tried to loosen downstream CRREL reviewed IJDB, 35 historic ice jams since 1795 CRREL assisted in installing a motion detector to monitor jam
18 IJDB: Tool for Emergency Management Gunnison River, Gunnison, CO Feb 2016 CO DHS requested USACE SPK technical assistance under PL CRREL reviewed IJDB, 9 historic ice jams since 1968 CRREL met with representatives from SPK, local and state officials at Gunnison, CO. Discussed immediate mitigation techniques and opportunities for longer term study.
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24 Gunnison, CO 2016 River ice issues were ongoing CRREL s role was to assess and provide any mitigation support and insights possible. IJDB records are used to more quickly ascertain historical context than previously possible.
25 Historical Record of Ice Jams in Gunnison, CO River Water Year Jam Date Locations Source Gunnison River /8/2016 Taylor River and Gunnison River IJD Ohio Creek /13/2012 near County Rd 48 Bridge IJD Ohio Creek /25/2010 near County Rd 48 Bridge IJD Gunnison River /19/2010 numerous, including tributaries IJD Tomichi Creek /27/2006 near County Rd 38 Bridge IJD Tomichi Creek /26/2004 near County Rd 38 Bridge IJD Ohio Creek /23/2004 near County Rd 48 Bridge IJD Gunnison River /9/ km above Steuben Creek confluence CRREL files Gunnison River /9/ km above Steuben Creek confluence IJD Gunnison River /20/ km above Steuben Creek confluence CRREL files Gunnison River /1/1984 unknown IJD Gunnison River /1/1980 unknown IJD Gunnison River /14/ km above Steuben Creek confluence BoR 1979 Gunnison River /3/ km above Steuben Creek confluence IJD Gunnison River /1/ km above Steuben Creek confluence IJD/BoR 1979 Gunnison River /7/ km above Steuben Creek confluence BoR 1979/CRREL files Gunnison River /10/ km above Steuben Creek confluence BoR 1979/CRREL files Gunnison River /1/1969 flooding at least up to McCabe property IJD Gunnison River /1/1968 flooding near reservoir IJD Tomichi Creek /28/1960 near County Rd 38 Bridge IJD
26 Gunnison, CO 2016 CRREL researched recent and historic hydrologic and meteorologic conditions in the area. This would include records of flow, reservoir levels, air temperature, etc.
27 Gunnison, CO 2016
28 Gunnison, CO 2016
29 Shear Walls
30 Overview of Colorado Ice Jams 324 Colorado ice events documented in the CRREL ice jam database October to May Freezeup and breakup 85 rivers & streams 114 locations in 85 cities/towns/etc
31 Colorado Ice Jams in IJDB
32 Summary of Colorado Jams Colorado experiences both freezeup and breakup ice jams Jams occur most often in December (21%), followed by March (20%). Frequency is close in Jan and Feb. Shear Walls in Gunnison River, Gunnison, CO, 2016
33 CO Ice Jams by Month
34 CO Ice Jams by River
35 CO Ice Jams by City
36 Questions?
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