Massachusetts Engineers-Rainfall Data Map Question
Massachusetts Engineers-Rainfall Data Map Question
(OP)
Attached (hopefully) is a scan of a map given to me 10 years ago when I started out as an engineer (several different sheets for different storms). I am looking for the source document of these maps. It appears to have been a Massachusetts insert in the Engineering Field Manual (EFM) from 1976 which may or may not be the first instance of the figure.
MassDEP uses the figures in the ConCom Handbook they put out and reference it as TP-40 which I have and this is not from that document. I contacted our USDA field office and they sent me 1990 book with similar figures but less detailed. It looks to me like somebody interpolated from TP-40 for Massachusetts only. I would just like to know the source for this vital data I have to use so often and am astounded that I can't find anybody that knows where they came from.
TIA
MassDEP uses the figures in the ConCom Handbook they put out and reference it as TP-40 which I have and this is not from that document. I contacted our USDA field office and they sent me 1990 book with similar figures but less detailed. It looks to me like somebody interpolated from TP-40 for Massachusetts only. I would just like to know the source for this vital data I have to use so often and am astounded that I can't find anybody that knows where they came from.
TIA





RE: Massachusetts Engineers-Rainfall Data Map Question
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good luck
RE: Massachusetts Engineers-Rainfall Data Map Question
RE: Massachusetts Engineers-Rainfall Data Map Question
I've seen them in other printouts and copies that people have had over the years.
I'm taking a wild guess that way back, Mass. DPW, now MHD, interpreted the TP-40 rainfall for Massachusetts and placed it in there design manual. I can't account for the different page numbers, unless it was provided in updated manuals and page nimbers changed.
I have some more books at home which I'll check to see if I have a reference.
RE: Massachusetts Engineers-Rainfall Data Map Question
All the maps I have seen in the past were always copies, I have never seen a full original manual.
RE: Massachusetts Engineers-Rainfall Data Map Question
RE: Massachusetts Engineers-Rainfall Data Map Question
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The latest design guide, look at Chapter 8, page 38. The map has a reference, I've found older maps with references to SCS.
Still have not been able to find that publication.
RE: Massachusetts Engineers-Rainfall Data Map Question
U.S Dept. of Agriculture, Soil Conservation Service. Guidelines for Soil and Water Conservation in Urbanizing Areas of Massachusetts, 1975