Questions tagged [watershed]

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4 votes
1 answer
56 views

Easiest way to visualize precipitation drainage using raster elevation files in R?

As a non-specialist, enviro-enthusiast, I am curious about visualizing post-precipitation run-off in my local area. I have been able to access and download appropriate elevatio rasters for my local ...
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0 votes
0 answers
50 views

Rainfall guage stations outside the watershed

How can I determine the rainfall depth for an event over the watershed, if I just have two stations, S1 and S2, that are outside the catchment? Methods I have thought of were to take the average of ...
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12 votes
1 answer
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Is Hudson Bay part of the Arctic or the Atlantic Ocean?

Years ago I learned that the Columbia ice field was North America's triple divide point: water flowing from this ice field could drain into the Artic, the Pacific, and the Atlantic Ocean. Something I ...
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0 votes
1 answer
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How much water do aquifers contain? How much does it take to deplete them?

How much water does a typical aquifer contain, and is casual well use is likely to deplete them? Your answer can take many forms, but an ideal question would cover these sort of areas- would a single ...
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5 votes
2 answers
187 views

Can I interpolate rainfall data from stations outside of watershed for the watershed?

I have only few station inside the watershed so I want to use the stations outside if I can to get better results
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  • 51
5 votes
2 answers
355 views

Comparing Pros and Cons of SWAT and HSPF

To model hydrology in a watershed, two of the most famous and widely used distributed models are SWAT and HSPF. I have some good understanding of HPSF, but I don't know when and why should one prefer ...
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4 votes
1 answer
94 views

how to know the correct results in watershed delineation in ArcGIS?

When I use one DEM in my study area to delineate watersheds, the results are different from when I mosaic 4 DEM layers adjacent to each other. After the mosaic process, 3 of the basins were merged in ...
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1 vote
0 answers
44 views

Watershed scale water quality indices

I understand water quality indices play a fundamental role in modelling water quality as they integrate multiple water quality parameters to bring about a single dimensionless digit that represents ...
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3 votes
0 answers
122 views

Why Coastal catchments should be appended for watershed analysis (Archydro Suggestion)?

I'm a GIS specialist with a good background in watershed hydrology and geomorphology theories. In a project, I should analyse coastal and inland catchments separately. I have some neighbourhood ...
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  • 173
1 vote
1 answer
415 views

Agricultural non point source of pollution (AGNPS) model input data

How to input climate data for AGNPS model? AGNPS model is developed USDA https://www.nrcs.usda.gov/wps/portal/nrcs/detailfull/null/?cid=stelprdb1042468
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  • 11
2 votes
1 answer
78 views

Unable to prepare input file for HSPF software for watershed modeling!

I am trying to use BASINS 4.1 software to prepare input file for HSPF (.uci). When I launch HSPF from BASINS software, I have to direct the sofware to read a time series file (.wdm). In my case I am ...
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3 votes
1 answer
339 views

To delineate the drainage basin for a lake, would the pour point be the inlet or the outlet?

I am interested in the area draining into and affecting a particular lake. Delineating this drainage basin, should I use the lake's inlet or outlet to best capture the relevant drainage basin? I think ...
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