Runoff from agricultural land and even our own yards can carry excess nutrients such as nitrogen and phosphorus into streams lakes and groundwater supplies.
How do you store roof runoff water.
Annual runoff generated roof area annual rainfall runoff coefficient 200 1000 0 9 180 000 litres or 47 520 gallons.
If you ve ever lived at the bottom of a hill during an extreme weather event then you know intimately about stormwater runoff.
Divide 100 by the number of downspouts in order to obtain the percentage of water collected from each downspout.
There are times when it rains especially during big storms that water cascades off of a roof like a waterfall.
Hence a storage capacity of 47 520 gallons is required to sail through the summer months with adequate water supply.
In a downpour a 5 gallon bucket fills in less that a minute.
Dry wells soil amendment and rain gardens are used to infiltrate water into the soil.
To store as much rainfall as possible in your garden soil you can set up a rainwater irrigation system that diverts your roof runoff water directly onto your garden beds or lawn if you prefer.
Count the number of downspouts coming from your roof.
Capture and store runoff runoff can be captured and stored for use or allowed to soak into the soil.
Rain barrels and cisterns are used for storage.
Of course the storm water then goes under the home.
Channel rainwater from the roof into a shallowly buried pipe that empties into an infiltration basin or swale at least 10 feet away from your house.
Determine the percentage of water collected from each downspout p.
Grow water tolerant plants such as shrub willows in the basin.
To be able to store the entire rooftop generated over the year the storage capacity required is.
How to redirect rain off a roof.
Convert the percentage to a decimal by dividing the percentage by 100.
Rain barrels make collecting roof runoff convenient.
While this is a normal aspect of roofing and.
Drainage ditches to carry stormwater runoff to storage ponds are often built to hold runoff and collect excess sediment in order to keep it out of streams.
However the amount of water that pours off at the area where the home roof meets the deck roof is overwhelming.