100 year flood for project outside US?

LEEDuser has a tipsheet on determining floodplain classification with FEMA data that may be worth consulting.However, this will only have data for U.S. projects. For non-U.S. projects, this is a challenging point to document. I don't have any particular tips on doing this, sorry!

“Definition/Description The flood having a one percent chance of being equaled or exceeded in any given year. This is the regulatory standard also referred to as the "100-year flood." The base flood is the national standard used by the NFIP and all Federal agencies for the purposes of requiring the purchase of flood insurance and regulating new development. Base Flood Elevations (BFEs) are typically shown on Flood Insurance Rate Maps (FIRMs).” You could use the flood-plane level of the worst recorded flood on records. This will be worse than the FEMA statistical 100-year flood. If you don't have at least 100 years worth of flood level records you'll probably have to approach a statistician to extrapolate something half plausible. I’ve read that this can be done for rain events for rainfall rates (Natural resources engineering By Ernest W. Tollner ) (which includes a statistical plausibility test), but since my knowledge terminates at around this point I’m not going to point you to a suitable equation (or set of many equations). Look in google books for Natural resources engineering By Ernest W. Tollner. It may have something in here that answers your question. Another good read is the sample case http://www.fema.gov/library/file?type=publishedFile&file=dfm_dfft.pdf&fileid=67562430-a0f2-11db-b057-000bdba87d5b which suggests using hydrological engineering methods to calculate in effect the maximum run-off rates and quantities.

See also http://www.hec.usace.army.mil/software/legacysoftware/hec1/hec1-download.htm

Hi, I would like to know the answer for this question. Can somebody help me please?. FOR A PREVIOUSLY UNDEVELOPED SITE, WHAT WATER BODIES DO NO HAVE TO MEET THE 50-FOOT SETBACK CRITERIA TO COMPLY WITH SUSTAINABLES SITES CREDIT, SITE SELECTION?. Thank you

There is no qualification of the type of water body, the requirement is no development within 50 feet of any water body.