Floodway/Floodplain simple question
Floodway/Floodplain simple question
(OP)
sup people,
i have a very simple question that i should probably know the answer to. i recently switched to land development after 3 years in environmental engineering (primarily remediation). anyway, i'm wondering what the difference between a 100-year floodplain and a floodway are. can anyone explain that to me?
i have a line in a drawing that we received and i'm not certain exactly what it is. my boss said that there is huge difference between a floodway and a floodplain and then he failed to explain. he's a pretty poor boss, inasmuch as i can't learn anything from him because he's socially inept and always in a horrible mood. i put off going to talk to him because he's always in such an unpleasant mood. he seems like a prime candidate for going postal. he fits the profile to a tee. if we were in a post office i'd probably come to work packin'.
anyway, if anyone could enlighten me on the difference between floodplains and floodways i would be very grateful. thanks,
stoddard
i have a very simple question that i should probably know the answer to. i recently switched to land development after 3 years in environmental engineering (primarily remediation). anyway, i'm wondering what the difference between a 100-year floodplain and a floodway are. can anyone explain that to me?
i have a line in a drawing that we received and i'm not certain exactly what it is. my boss said that there is huge difference between a floodway and a floodplain and then he failed to explain. he's a pretty poor boss, inasmuch as i can't learn anything from him because he's socially inept and always in a horrible mood. i put off going to talk to him because he's always in such an unpleasant mood. he seems like a prime candidate for going postal. he fits the profile to a tee. if we were in a post office i'd probably come to work packin'.
anyway, if anyone could enlighten me on the difference between floodplains and floodways i would be very grateful. thanks,
stoddard





RE: Floodway/Floodplain simple question
RE: Floodway/Floodplain simple question
RE: Floodway/Floodplain simple question
I'm not really concerned about placing fill in the floodplain or doing any earthwork at all. I'm just curious as to what the difference is between the floodway and the floodplain. I know what the floodplain is.
My understanding from your definition is that if I were to fill the floodway fringes (floodplain) to an extent that will raise the 100-year WSE 1' then that new floodplain boundary is the floodway? It doesn't really make sense to me. Someone put in the simplest terms possible please.
peace,
stoddard
RE: Floodway/Floodplain simple question
ccor is right about the fill. Floodway = No. Floodplain = Maybe.
Also, although I can't say for your area, in Pennsylvania most areas don't have delineated floodways, so the boundaries are taken as 50' from the normal channel limits.
RE: Floodway/Floodplain simple question
RE: Floodway/Floodplain simple question
htt
See page 3 for a pictorial explanation of your question. This is a pretty good reference and should probably answer any of your basic knowledge questions on the subject.
I believe this link came from a post on the storm/flood engineering forum also on this website. This would have probably been a more appropriate location to post your question although I realize manuvering to all forums in the site is a bit difficult when you have just began exploring it.
RE: Floodway/Floodplain simple question
Peace,
Stoddard
RE: Floodway/Floodplain simple question
Peace,
Stodard
RE: Floodway/Floodplain simple question
Your explanation seems entirely backwards. Sam's is correct and is explained well in his linked document.
A floodway is NOT the channel limits during a 100-yr storm. It is a ficticious limits of channel that could convey the 100 year flood, at an elevation 1 foot higher, if one filled the rest of the floodplain.
There are varying local regulations on the possibility of filling in a floodway. Some allow fill in the floodway as long as one shows: no rise...no more than 0.1' rise...etc.
RE: Floodway/Floodplain simple question
It's a pretty difficult concept to explain to someone. The link above that sam74 supplied is the best at explaining the difference.
Peace,
Stoddardvilla
RE: Floodway/Floodplain simple question