LiDAR Border

Flow initiation

areas for the

stream flow

(up to 40 ha) and

flood plain

(400 ha +)

delineations

4 ha

40 ha

400 ha

4000 ha

40000 ha

Basin Borders

Watershed &

cartographic

0 to 1 m

depth-to-water

(DTW)

delineations

based on

SRTM 30 m

DEM

Chile:

Valparaiso

with souther

region

LiDAR extent

Valparaiso

watershed

close-up

LIDAR border

Flow initiation

thresholds

4 ha

40 ha

400 ha

4000 ha

40000 ha

Basin borders

LiDAR border

Flow

Initiation

Thresholds

4 ha

40 ha

400 ha

Basin borders

LiDAR extent

close-up

Valparaiso

close-up

LiDAR border

Flow

Initiation

Thresholds

4 ha

40 ha

400 ha

Basin borders

Flow Threshold

4 ha

Crossing points

Roads

Streams

Depth-to-water

(0 to 1 m)

+ watershed areas

at stream-road

crossings for forest

and urban areas

To convert

watershed areas at

road-stream

crossings into flow

rates(m3/day) for

specific storm

events (ppt,

mm/day):

ppt (mm/day)

x watershed area

(ha) *1000

Example: ppt =

100mm/day;

watershed area = 14

ha.

Flow rate = 14,000

m3/day

Valparaiso

LiDAR DEM

with DTW

delineations

LiDAR Border

Flow Initiation

Thresholds

4 ha

40 ha

400 ha

Valparaiso

LiDAR DEM

on

surface image

LiDAR Border

Flow Initiation

Thresholds

4 ha

40 ha

400 ha

Another view

Flow Initiation

Thresholds

4 ha

40 ha

400 ha

LiDAR border

Basin borders

Another view

Flow Initiation

Thresholds

4 ha

40 ha

400 ha

LiDAR border

Flow Threshold

4 ha

Cartographic

DTW

Delineation

(0 1 m)

using the

full-feature

LiDAR

DEM

Flow Threshold

4 ha

LIDAR Border

Cartographic

DTW

Delineation

(0 1 m)

using the

full-feature

LiDAR

DEM

Data Sources

LiDAR DEM: bare-earth and full-features.

USGS (2014), Shuttle Radar Topography Mission, 1 Arc Second 2.0, Global Land Cover Facility, University of Maryland, College Park, Maryland

Google Earth Imagery

ArcGIS BaseMap Imagery: Esri, DigitalGlobe, GeoEye, i-cubed, USDA, USGS, AEX, Getmapping, Aerogrid, IGN, IGP, swisstopo, and the GIS User Community