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UAS FOR WATER RESOURCES

Jeremy Crowley, Hydrogeologist, MBMG

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UAS EQUIPMENT

  • Quadcopter
    • Entry level UAS mapping system
    • DJI Phantom 4 V.2
    • $2000
    • Maps about 25 acres per flight
  • Hexacopter
    • Heavy lift (12 lbs)
    • Multipurpose
    • DJI Matrice 600 pro
    • $10,000
    • Maps about 25 acres per flight
  • Fixed wing
    • Bigger surveys
    • Sensefly ebee
    • $30,000
    • Maps about 200 acres per flight

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PHOTOGRAMMETRY

  • Accurate 3D Models
  • Digital Surface Models (up to about 5 cm accuracy)
  • River elevation

DSM

Hillshade

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3D MODEL ANIMATIONS

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TIME SERIES ANALYSIS

9/23/19

1890cfs

11/5/18

1280cfs

3/10/19

927cfs

6/3/19

13400cfs

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7/14/19

7080cfs

2 flights per model, approx. 460 pictures per flight, 80% side and front overlap, Altitude= 107m, Speed 8 m/s

RMSE≈ Hor. 3.5cm, Vert. 9cm, Pixel size >5cm

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UAV THERMAL MODELS

9/23/19

11/5/19

3/10/19

3 flights per model, approx. 2900 pictures per flight, 87% side and front overlap, Altitude 107m, Speed 8 m/s

7/13/19

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MULTISPECTRAL

  • Uses
    • Soil Moisture
    • Normalized Difference Vegetation Index (NDVI)
    • Evapotranspiration
    • Plant Health

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LIDAR

  • Ability to penetrate canopy

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  • Can get higher point density

(100 pts/m^2) than

manned aircraft (8 pts/m^2)

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  • Our system can do Lidar and

Photogrammetry at same time

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BATHYMETRIC LIDAR

  • Affected by turbidity, clarity, bottom reflectance
  • Can see 2m deep from 30m high
  • Can see 5m deep from 5m
  • Up to 3000 pts/m^2

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VIDEOGRAPHY

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EMERGING TECHNOLOGY

  • Drone video and bathymetry for remote sensed stream discharge
  • Hyperspectral for aquatic invasives
  • Fish habitat mapping

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MT LIDAR ACQUISITION

  • 2019- Received $1.25M from USGS

As of 2019

Proposal for 2020

  • 2020- Applying for $6.7M from USGS

http://montana.maps.arcgis.com/apps/MapSeries/index.html?appid=55cc886ec7d2416d85beca68d05686f4