0
votes
0answers
41 views

ArcGIS ModelBuilder Clip Raster by Polygon Error

My task is to derive the hypsometric integral and hypsometric curve for a lot of drainage basins. Since it is very time consuming to do this manually, i have created a model (with help from this ...
4
votes
0answers
76 views

Flow direction generated for river is incorrect

I am trying to generate a hydrologic model and I can not really proceed on the next processes. I have this problem on generating flow direction. I have already executed fill sinks and the next is flow ...
1
vote
2answers
51 views

Divide stream segment at specific point

I have a stream network and outlets as shown below. It is overlapped with outlet cells raster which I can use to get sub-watersheds but when I add an outlet (red color cell in current example) then ...
0
votes
1answer
37 views

How much precipitation must fall within a catchment area to fill up a sink’s entire volume assuming that the runoff conditions are perfect

I am perfoming an exercise and I need to answer these question, any hints would be extremely useful. How can it be calculated how much precipitation that must fall within a catchment area to fill up ...
3
votes
0answers
138 views

How to determine longest length of segmented polylines representing rivers? [duplicate]

I have a series of shapefiles using polylines to represent the hydro network of a region. As you can see in the picture, these polylines go into great detail. These polylines are very segmented even ...
4
votes
5answers
1k views

Calculating Runoff / Streams using DEM in ArcGIS

I am just curious about the workflow that many of you use for runoff/stream analysis using a DEM and create a "water network" from the results in ArcGIS 10.1? I know the average rainfall for different ...
2
votes
2answers
1k views

Error running ArcHydro tools function in Arcmap

I am trying to run a function from ArcHydro tools in Arcmap 10.1; Sink evaluation. But before it can finish it returns an error message, that, frankly, I don't understand at all. It goes ...
1
vote
0answers
230 views

Morphometric and hydrological analysis with Python and ArcGIS

How can I write a program using python, that calculates some morphometric and drainage indexes using numeric attributes in the attribute table with ArcGIS? The data I have in my table are area and ...
3
votes
0answers
111 views

Which geostatistical tools to use to determine surface changes over 40 years?

I have a data from the Weather station with SWEmax (snow water equivalent) collected over 40 years. I need to interpolate the data over my river's watershed and then, somehow, determine the ...