STREAMBANK EROSION AND PREDICTION OF SUSPENDED SEDIMENT FLUX SCOTT - - PowerPoint PPT Presentation

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STREAMBANK EROSION AND PREDICTION OF SUSPENDED SEDIMENT FLUX SCOTT - - PowerPoint PPT Presentation

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STREAMBANK EROSION AND PREDICTION OF SUSPENDED SEDIMENT FLUX SCOTT HAMSHAW | FEBRUARY 6, 2016 MOTIVATION: CHALLENGES IN SEDIMENT STUDIES Mad River at Moretown, Vermont USGS Gauge @ Moretown - 10/31/12 USGS Gauge @ Moretown - 10/31/12 1500

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STREAMBANK EROSION AND PREDICTION OF SUSPENDED SEDIMENT FLUX

SCOTT HAMSHAW | FEBRUARY 6, 2016

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MOTIVATION: CHALLENGES IN SEDIMENT STUDIES

10/29 12 AM 10/29 12 PM 10/30 12 AM 10/30 12 PM 10/31 12 AM 10/31 12 PM 11/01 12 AM 11/01 12 PM 11/02 12 AM 11/02 12 PM 500 1000 1500 Discharge (cfs) Time

USGS Gauge @ Moretown - 10/31/12

500 1000 1500 TSS (mg/l) Discharge (cfs) TSS (mg/l) 10/29 12 AM 10/29 12 PM 10/30 12 AM 10/30 12 PM 10/31 12 AM 10/31 12 PM 11/01 12 AM 11/01 12 PM 11/02 12 AM 11/02 12 PM 500 1000 1500 Discharge (cfs) Time

USGS Gauge @ Moretown - 10/31/12

500 1000 1500 TSS (mg/l) Discharge (cfs) Turbidity (NTU) TSS (mg/l)

Discharge Turbidity TSS Sample

Mad River at Moretown, Vermont

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Winooski River Gravel Roads Mad River Floodplain Deposition Streambanks (Forested) Hillslopes Agricultural Fields Urban/ Suburban Upper Basin Streambank /Slopes

CONTEXT: ESTIMATE QUANTITIES AND SOURCES OF SEDIMENT FLUX Conceptual Sediment Budget of Mad River

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THREE YEARS OF SEDIMENT MONITORING IN MAD RIVER WATERSHED

Turbidity sensors to capture near real- time sediment concentration

Coordination with RACC River ISCO sampling efforts and team

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5,000 10,000 15,000 20,000 25,000

1-Apr 1-May 1-Jun 1-Jul 1-Aug 1-Sep 1-Oct 1-Nov

Cumulative Sediment Load (tonnes)

2013

SEDIMENT LOAD ESTIMATION

1 10 100 1000 0.1 10 1000

TSS (mg/L) Turbidity (NTU) 1-Jun 1-Jul 1-Aug 1-Sep 1-Oct

2014 Discharge (cfs) Turbidity (NTU)

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CHARACTERIZING SEDIMENT RESPONSE DURING STORM EVENTS

Clustering of storm events using a self-organized map

Discharge Time TSS Discharge TSS Discharge Discharge TSS TSS Time

Time to Peak Peak Discharge Max Rainfall Rate Baseflow at Start Total Load

Inputs

. . .

Storm Event Characteristics Sediment Response Pattern

Outputs

Clockwise Counter- Clockwise Figure 8 Statistical Mapping Other

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PREDICTION OF SUSPENDED SEDIMENT LOAD

Hierarchical ANN model uses predicted streamflows as an input to predict sediment load Inputs Output Suspended Sediment Load

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FORECASTING SUSPENDED SEDIMENT LOAD

Test predictions in other similar watersheds

Utilize future climate simulations of meteorological data

Turbidity (NTU) 15-Min Rainfall (in) Time (days)

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Winooski River Gravel Roads Mad River Floodplain Deposition Streambanks (Forested) Hillslopes Agricultural Fields Urban/ Suburban Upper Basin Streambank /Slopes

CONTEXT: ESTIMATE QUANTITIES AND SOURCES OF SEDIMENT FLUX Conceptual Sediment Budget of Mad River

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OVER 20 KM OF RIVER CORRIDOR FLOWN WITH UAS

SenseFly eBee Unmanned Aircraft System (UAS) used

Six comparison sites with terrestrial LiDAR

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MEASUREMENT OF BANK SURFACES USING AN UAS: ACCURACY ASSESSMENT

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MEASUREMENT OF BANK SURFACES USING AN UAS: CHANGE DETECTION

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PUBLICATIONS

 Hamshaw, S.D., Dewoolkar, M., Rizzo, D.M., O’Neil-Dunne, J., Frolik, J., Bryce, T

., Engel, T . (2016). Quantifying streambank erosion: a comparative study using an unmanned aerial system (UAS) and a terrestrial laser scanner, Earth Surface Processes and Landforms (In Process)

 Expected Publications:

Recurrent Counterpropagation Neural Network for Predicting Suspended Sediment Load in Ungauged Catchments, to be submitted to Journal of Hydrology

Classification and Prediction of Event-Based Suspended Sediment Flux using Artificial Neural Networks, to be submitted to Hydrological Processes

Sediment yields and storm event dynamics in the Mad River watershed, to be submitted to Journal of Hydrology Regional Studies

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ACKNOWLEDGEMENTS

 This work supported by:

National Science Foundation Graduate Research Fellowship under Grant No. DGE- 0925179.

Vermont EPSCoR with funds from the National Science Foundation Grant EPS- 1101317.

Vermont Water Resources & Lake Studies Center Grant

With additional support by:

U.S. Department of Transportation Office of the Assistant Secretary for Research & Technology

NSF Grant CMMI-1229045

Richard Barrett Foundation

Robert & Patricia Switzer Foundation

And thanks to:

UVM Spatial Analysis Lab

Beverley Wemple Lab

Bowden Watershed Research Lab

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MOTIVATION: CHALLENGES IN SEDIMENT STUDIES

2000 4000 6000 8000 10000 12000

Folsom Brook Freeman Brook High Bridge Brook Mill Brook Shepard Brook

Catchment TSS Load tonnes/km2

Eric Smeltzer (unpublished 2013) Estimates of annual sediment loads for Mad River tributaries.