Start by using NOAA’s data
The best resource we've found for rainfall intensity data is NOAA's Hydrometeorological Design Studies Center Precipitation Frequency Data Server.
Start by choosing your state from the U.S. map. Depending on your state, there are two different step-by-step processes. Blue-colored states allow you to search the database, and provide easy-to-read data tables. Gray-colored states require you to determine the value for your site by reading isopluvial maps. We’ll explain both, step by step.

For blue states
Step 1. Choose “precipitation intensity” under Data Type

Step 2. Select location by either selecting a data site close to your property from the dropdown list, entering the latitude and longitude of your property, or clicking on the map.
The below example shows use of the drop-down list for a project site near Chicago’s Midway Airport, where a climate station is located. Entering coordinates or clicking on the map allows selection of precise locations for project sites that are not near to the climate monitoring stations listed in the drop-down menu.
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4 Comments
Narriate on the stormwater management strategies
Would someone be willing to share their narriate on the stormwater management strategies in place, including a summary of how and to what extent infiltration, harvesting or evapotranspiration strategies contribute to the mitigation volumes reported? I would never copy and paste the narriate I'm just having a hard time getting started on this. I know someone eles' example would help me create my own. Thanks.
Mark, you may find our Documentation Toolkit for SSc6.1 to be helpful. Although it doesn't have exactly what you're looking for, there is stormwater management outline that can provide a start.
Trying to locate 2yr, 24hr rainfall info for Central America
I am working on a Federal facility project in Honduras that we are designing to LEED Silver. Trying to qualify for Credit SS6.1, but have been unsuccessful in finding rainfall data. Has anyone located a source for this information for Central America?
Michelle, may I suggest that you re-post this question to the NC SSc6.1 forum? You might have better luck there with people working on this credit seeing your question.
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