Robert C. Hilldale

Reclamation Office: Technical Service Center, Sedimentation and River Hydraulics
Contact Information: (303) 445-3135, rhilldale@usbr.gov

This is one of two types of sensors attached to the underside of the steel impact plates.<br>[<a href='imagepop.cfm?id=6499|170' target='_blank' style='color:#bbb'>view information</a>] This is one of the two types of sensors mounted to the stainless steel impact plates to measure vibration as gravel crosses the plate.  This accelerometer is multi-frequency and waterproof.<br>[<a href='imagepop.cfm?id=6499|172' target='_blank' style='color:#bbb'>view information</a>] These channels form the housing to which the instrumented plates are attached.  Wires from each sensor are also routed to the bank through these channels, which will span the channel end to end.<br>[<a href='imagepop.cfm?id=6499|174' target='_blank' style='color:#bbb'>view information</a>] Photograph of the channel with an impact plate mounted to it.  Note the conduit for routing wires and threaded backer bar for bolting the plates to the channel.<br>[<a href='imagepop.cfm?id=6499|176' target='_blank' style='color:#bbb'>view information</a>] Bed load impact sensors being installed across the Elwha River in 2009.<br>[<a href='imagepop.cfm?id=6499|178' target='_blank' style='color:#bbb'>view information</a>] Installation of the bed load impact sensors in 2009.<br>[<a href='imagepop.cfm?id=6499|180' target='_blank' style='color:#bbb'>view information</a>] Bed load impact plate installation in 2008.  Note the rubber strips used for acoustic isolation, which prevents strikes on one plate registering on the adjacent plate.  These plates are being installed in the low flow notch of the weir when the river flow was diverted and the channel was dry.<br>[<a href='imagepop.cfm?id=6499|182' target='_blank' style='color:#bbb'>view information</a>] This is the start of the wiring job, routing two wires each from 72 sensors into signal conditioners, analog to digital converters, and then one of three computers that operate the system.  May 2011.<br>[<a href='imagepop.cfm?id=9562|184' target='_blank' style='color:#bbb'>view information</a>] These are three analog to digital converters, routing the wiring from sensors to computer.<br>[<a href='imagepop.cfm?id=9562|186' target='_blank' style='color:#bbb'>view information</a>] This is the back of the computer cabinet showing the bus boards on the back door and signal conditioners at the top of the cabinet.  Two of the three PCs are visible at the bottom of the cabinet.<br>[<a href='imagepop.cfm?id=9562|188' target='_blank' style='color:#bbb'>view information</a>] This photograph shows the front of the computer cabinet.  Visible is one of the PCs that operate the system, a KVM switch, power strips on the right wall, and the signal conditioners at the top of the cabinet.<br>[<a href='imagepop.cfm?id=9562|190' target='_blank' style='color:#bbb'>view information</a>]

Research Funded by the Science and Technology Program

Robert C. Hilldale began doing research for the Science and Technology Program in the 2004 fiscal year, with funding provided by the program as recently as the 2017 fiscal year. Projects were funded under the Science and Technology Program research topics Sediment Management and River Restoration and Water Resource Data Analysis.

The following research projects were funded in whole or in part by the Science and Technology Program. Robert C. Hilldale is listed as the principal investigator, or primary researcher. Click the project's title to view more information.

FISP

Project ID: 1709
Fiscal Year of Funding: 2017
Research Results:

  • FISP (final, PDF, 238KB)
  • FISP (final, PDF, 238KB)

Elwha Impact Plate System - accelerometers

Project ID: 6209
Fiscal Years of Funding: 2016 - 2017
Research Results: Field & laboratory calibration of impact plates to measure coarse bedload (final, PDF, 671KB)

Measuring bed load with hydrophones

Project ID: 7906
Fiscal Years of Funding: 2016 - 2017
Research Results: Development of a portable passive-acoustic bedload monitoring system (final, PDF, 603KB)

Pilot Studies of Reservoir Sustainability Options - Large Reservoirs

Project ID: 9344
Fiscal Years of Funding: 2016 - 2018
Research Results: Please contact research@usbr.gov about research products related to this project.

Federal Interagency Sedimentation Project

Project ID: 2559
Fiscal Years of Funding: 2013 - 2015
Research Results:

Field Testing and Calibration of a Hydrophone System for Surrogate Bedload Measurement

Project ID: 9342
Fiscal Year of Funding: 2015
Research Results:

Signal Processing From Bedload Impact PLates Instrumented With an Accelerometer

Project ID: 4542
Fiscal Year of Funding: 2015
Research Results:

Calibration of Bed Load Impact Sensors for Surrogate Sediment Measurement

Project ID: 115
Fiscal Years of Funding: 2012 - 2014
Research Results:

Passive Acoustic (Hydrophone) Measurement of Coarse Bed Load

Project ID: 4864
Fiscal Years of Funding: 2012 - 2014
Research Results:

Passive Hydro-Acoustic Monitoring of Gravel-Bed Material Sediment Load for Management of Gravel-Bed Rivers, including Gravel Augmentation to Improve Endangered Fish Habitat Downstream from Dams

Project ID: 3253
Fiscal Year of Funding: 2011
Research Results: Measuring Coarse Bed Load Using Hydrophones (final, PDF, 1.0MB)

Continued Development of Signal Processing Methods for Surrogate Bedload Measurement on the Elwha River

Project ID: 9562
Fiscal Year of Funding: 2010
Research Results:

Surrogate Sediment Measurement Technologies--Federal Interagency Sedimentation Project (FISP)

Project ID: 6435
Fiscal Years of Funding: 2008 - 2010
Research Results: Research Report: Federal Interagency Sedimetnation Project (final, PDF, 35KB)

Development of a Continuous Bedload Transport Measurement Technique

Project ID: 6499
Fiscal Years of Funding: 2008 - 2009
Research Results:

Evaluation of Aerial Bathymetric Surveys in Shallow Riverine Environments

Project ID: 1573
Fiscal Year of Funding: 2006
Research Results:

Federal Interagency Sedimentation Project (FISP)

Project ID: 1293
Fiscal Years of Funding: 2004 - 2006
Research Results: Research Report: Federal Interagency Sedimetnation Project (final, PDF, 35KB)

Reclamation of Flood Plain Mining Pits to Improve Habitat and Reduce Potential for Flood Damage

Project ID: 4842
Fiscal Years of Funding: 2005 - 2006
Research Results: Rehabilitation of Floodplain Mining Pits: Interim Report Detailing Initial Plans and Procedures (final, PDF, 1.2MB)


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Last Updated: 11/17/20