1. ERDC Knowledge Core
  2. Engineer Research and Development Center (ERDC)
  3. Cold Regions Research Engineering Laboratory (CRREL) - (2/1/1961 - present)
  4. Publication
  5. Technical Report
Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/35293
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dc.contributor.authorGelvin, Arthur B.-
dc.contributor.authorWilliams, Christopher R.-
dc.contributor.authorSaari, Stephanie P.-
dc.date.accessioned2020-01-27T15:49:53Z-
dc.date.available2020-01-27T15:49:53Z-
dc.date.issued2019-12-
dc.identifier.govdocERDC/CRREL TR-19-26-
dc.identifier.urihttps://hdl.handle.net/11681/35293-
dc.identifier.urihttp://dx.doi.org/10.21079/11681/35293-
dc.descriptionTechnical Report-
dc.description.abstractThe Moose Creek Dam, completed in 1979, is a 7.5-mile long earthen dam located in North Pole, Alaska designed to protect the Fairbanks and North Pole areas from flooding by regulating flow on the Chena River. The earth-filled embankment and a concrete control structure regulates flow with four gated bays. In 2014, two minor flood events took place within 1 month of each other. Flood observations discovered over 1,000 pin/small sand boils downstream of the stability berm, which could signify the initiation of backward erosion and piping with a vertical exit through the boil. The location of greatest distress was mostly within areas of permafrost, some of which have degraded since the dam’s construction. During operation, groundwater levels are measured manually at more than 150 piezometers. In 2018, the Corps of Engineers Alaska District tasked the Cold Regions Research and Engineering Laboratory (CRREL) to automate-groundwater levels measurement by installing 21 piezometers. CRREL added instrumentation and monitoring to a network system that aggregates all data. The web-based monitoring system provides a new tool that allows remote Corps personnel to monitor groundwater levels and seepage in areas of significant concern and receive notifications of developing distress during a flooding event.en_US
dc.description.sponsorshipUnited States. Army. Corps of Engineers. Alaska District.en_US
dc.description.tableofcontentsAbstract .......................................................................................................................................................... ii Figures and Tables ........................................................................................................................................ iv Preface ............................................................................................................................................................ vi Unit Conversion Factors ............................................................................................................................ 51 1 Introduction ............................................................................................................................................ 1 2 Piezometers ........................................................................................................................................... 4 3 Equipment ............................................................................................................................................12 3.1 Data-logging systems.................................................................................................... 12 3.2 Pressure sensor ............................................................................................................ 12 3.3 Radios............................................................................................................................ 14 3.4 Antennas ....................................................................................................................... 15 3.5 Radio frequency (Rf) link budget, and fade margin calculation ................................. 20 3.6 Remote system power budget ...................................................................................... 23 4 Data Delivery ........................................................................................................................................ 25 4.1 Network environment ................................................................................................... 25 4.2 Database software ....................................................................................................... 26 5 Installation and Lessons Learned .................................................................................................... 28 5.1 Summer installation ..................................................................................................... 28 5.2 MLWeb interface ........................................................................................................... 31 5.3 Piezometer data for cross-sections for the embankment .......................................... 35 5.4 Piezometers within the control works .......................................................................... 41 5.5 Remote system power performance ............................................................................ 45 5.6 Adjustments for power budget ..................................................................................... 46 6 Conclusion ............................................................................................................................................ 48 Bibliography ................................................................................................................................................. 49 Acronyms and Abbreviations .................................................................................................................... 50 Report Documentation Page (SF 298) ................................................................................................... 52-
dc.format.extent60 pages / 5.467 Mb-
dc.format.mediumPDF/A-
dc.language.isoen_USen_US
dc.publisherCold Regions Research and Engineering Laboratory (U.S.)en_US
dc.publisherEngineer Research and Development Center (U.S.)-
dc.relation.ispartofseriesTechnical Report (Engineer Research and Development Center (U.S.)) ; no. ERDC/CRREL TR-19-26-
dc.rightsApproved for Public Release; Distribution is Unlimited-
dc.sourceThis Digital Resource was created in Microsoft Word and Adobe Acrobat-
dc.subjectPiezometeren_US
dc.subjectRemote sensingen_US
dc.subjectGroundwateren_US
dc.subjectWater tableen_US
dc.subjectEarth dams--Erosionen_US
dc.subjectEarth dams--Seepageen_US
dc.subjectChena River (Alaska)en_US
dc.titleWeb-based monitoring of piezometers for the U.S. Army Corps of Engineers Moose Creek Dam, North Pole, Alaskaen_US
dc.typeReporten_US
Appears in Collections:Technical Report

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