Questions tagged [sink]

A junction feature that pulls flow toward itself through the edges of a geometric network.

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votes
1answer
174 views

Fixing spikes in DSM from LiDAR?

I have a DSM derived from drone LiDAR that I want to use as a base to drape imagery and, paired with a DTM, as a basis for estimating canopy height/volume. Unfortunately, the DSM has has many "spikes"...
3
votes
0answers
153 views

Fill not filling all sinks using ArcGIS Spatial Analyst and ModelBuilder?

I am trying to make a model where I get a shapefile of conical hills in ArcMap 10.5.1. First I invert the DEM to get depressions. Then I used the fill tool and I set z-limits for each meter from 10 to ...
0
votes
0answers
66 views

Minimum Bounding Rectangle [duplicate]

I am stuck in a seemingly simple but strange thing. I am finding sinks in an area by LiDAR data. after finding the sinks, I want to determine their elongation and for this purpose I use minimum ...
3
votes
1answer
124 views

Are sinks in DEM considered to be errors?

According to How Sink works in the ArcGIS Desktop 10.3 documentation: Naturally occurring sinks in elevation data with a cell size of 10 meters or larger are rare (Mark 1988), except in glacial ...
0
votes
2answers
407 views

Filling only the deepest sinks/depressions in a DEM

I am trying to come up with a workflow that will extract the location of surface mines from a DEM. My original thought was to fill the depressions in the DEM and then subtract the original DEM from ...
4
votes
1answer
324 views

Obtaining sink morphometry from local minima points

I am working on LiDAR data from GIS and R and I want to extract landforms from the DEM. I have found a method to obtain local minima points of my LiDAR data. However, I would like to obtain the ...
2
votes
0answers
699 views

Fill tool settings in ArcMap? [closed]

Specific question on Fill tool in ArcGis 10.2.2, I got a filling problem, I think holes are not fully filled when I use the fill tool, how do I change that ? 2 images of the same area for an example, ...
2
votes
0answers
297 views

Automated detection of Sinkholes

I'd like to create a map of sinkholes in ArcGis 10, I have a DEM, 2m resolution, is there a tool to detect local minimum points ? tried "sink" tool without any success, result is very small holes. ...
5
votes
2answers
2k views

Finding depression with contour lines

How can I find depression contour lines? I already have find depressions via Fill-method, but now I try to detect them by using the contour lines, anyone have an idea ?
3
votes
1answer
321 views

Assigning Sink ID to upstream features in ArcGIS geometric network?

Looking for a way to automatically assign an 8-character Sink ID to every upstream feature in a geometric network. There are over 500 sinks and about 5000 points and lines upstream from those sinks. ...