# Tag Info

### Is there a method to determine the point rainfall intensity for small catchments?

The rational method is especially usefull for small areas. For larger catchments it is less accurate. Then you should use a rainfall-runoff model but that is only possible when you have sufficient ...
• 413

### How to simulate rainfall for a 1 in 100 year storm event?

Sounds a bit unfeasible to me to really and truly properly simulate... a bit like asking the timeline of how a hypothetical 100 story building would be built. There's certainly some patterns to how ...
• 8,745

### Comparing Pros and Cons of SWAT and HSPF

This is a broad question, the best way to compare the models is to go through the manuals and compare the process algorithms to see how the various hydrologic processes are handled. There are other ...
• 751
1 vote

### Manning's N vs. Drag Coefficient Cd values for NLCD land cover classes

I think you are confusing terminologies. The Manning N values are representations of surface roughness that is used in the Manning equation, as it is applied to fluid flow in an a open or a closed ...
• 24.7k
1 vote
Accepted

### Calculating total daily rainfall from a tipping bucket rain gauge

You are on the right track. Rain gauges measure rainfall as a linear measure. Consequently, 2 mm of rainfall is the same as saying that the measured depth of water that would have accrued due to ...
1 vote

### Comparing Pros and Cons of SWAT and HSPF

I'll preface by saying I have no hands-on experience with either model; however, HSPF has always seemed cumbersome whereas SWAT seems more user friendly. Again, just my read of the software without ...
• 41
1 vote

### Are there ways stormwater attenuation can be quantified for comparison between different systems or conditions?

A typical ratio calculated to quantify this type of response, especially at larger scales (such as for land use changes) is the runoff ratio: $$R = Q/ P$$ where $R$ is the runoff ratio [mm/mm or ...
• 751

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