Hydro_TX-QC
Civil/Environmental
- Sep 28, 2023
- 1
I am working on the hydrology/hydraulics portion of a construction project, a school expansion including the addition of new drop off loops on the school property.
My first step is to determine my existing conditions' peak flow rate at the drainage area's final drainage point.
One of the sub-catchment areas (DA-3) that drains into the main drainage area collects runoff from a roadside ditch that crosses several (6) culverts. The ditch's runoff is then conveyed downstream via two 24" conduits 565 of if length into the main drainage area.
My question is, do i need to model the culverts to determine my peak runoff rate? It seems to me that if I don't, I may overestimate my runoff rate. Are there other risks involved? What's the common practice? What are some reasonnable assumptions I can make to avoid doing so?
The total project drainage area is approximately 50 acres. The ditch's drainage area is 9 acres.
Thank you for reading.
My first step is to determine my existing conditions' peak flow rate at the drainage area's final drainage point.
One of the sub-catchment areas (DA-3) that drains into the main drainage area collects runoff from a roadside ditch that crosses several (6) culverts. The ditch's runoff is then conveyed downstream via two 24" conduits 565 of if length into the main drainage area.
My question is, do i need to model the culverts to determine my peak runoff rate? It seems to me that if I don't, I may overestimate my runoff rate. Are there other risks involved? What's the common practice? What are some reasonnable assumptions I can make to avoid doing so?
The total project drainage area is approximately 50 acres. The ditch's drainage area is 9 acres.
Thank you for reading.