small stream water intake pipe 1

[Garymill]

I am looking for information on designing and constructing a submerged water intake at the bank of a small stream. The structure would house a pipe inlet for pumping water to a resevoir for a sprinkler system. any help would be appreciated.

 

[gerhardl]

Details depending on what small stream and small intake actually describes, climatic (frost?, tropic?) and quality of water and stream velocity (changing conditions?)

Intake could be everything from plastic hose (pipeline) hanging free to intake protected by structural well.

General:
a) Coarse 'cage' protected (3-5mm light openings?) plastic pipeline intake end.
b) Checkvalve mounted in pipeline opening.
c) Do not forget that fine particles (silt, clay) could cause problems and require cleaning in reservoir and clog or damage pumps, valves and spreaders if not avoided. Try, if necessary, submerged 'well' construction or two-chamber solution with your pipe intake well above bottom, and dimensions selected such that flow is slow enough and 'labyrinted with thresholds' to allow silt or particles to set. Could for instance be a kind of 'holed pipeline in holed pipeline staked into bottom construction'. Extra fine-filter before spreaders?

Once you have control of coarse and fine particles the rest can be solved by standard components.

Do not forget to empty the system, and regulary test-run if long standstills.

Intake pump selection even then to allow for particles (fine and coarser) in intake water.

 

[SIU79]

It sounds like what you want is a dry hydrant. See the link below. It's a concept typically used by rural fire departments for an emergency source of water.

http://www.co.larimer.co.us/wildfire/dry_hydrant_concept.htm

 

[equimo]

Gerhardl is right telling most of the parameters you have to have in account for a general design. Roughly it is a good idea. However, you must have in consideration many others for having a good design: Topography, minimal deep of water in dry season, minimal flow, and quality of the water (physical and chemical) to base your design on the type of pipe system to use and how to take water. For instance if flow is to low, a filter pipe system could be the solution and one tank as reservoir from which you can pumping water to the plant. Other types can came to your mind when you have all the information.