Water Pressure and Old Pipes
Many houses and subdivisions around Warren Michigan are about 50 years old. The earth has settled, shifted slightly, and the underground rain water connections are no longer watertight. They leak into the surrounding dirt. Ordinarily, it is no big deal.
A crisis can occur when the dirt is already quite saturated with rain water AND it continues to rain. The ground water table begins to rise, and it seeps into “other” pipes, like the Sewer Connections.
The storm water in NorthWest Warren neighborhoods flows into the Red Run Drain (via drains at the BOTTOM of the open stormwater channel)
The Red Run Drain fills quickly, rapidly, as Oakland County also contributes stormwater flow. The water level may be 20 to 30ft deep in spots.
Water pressure at the bottom of a reservoir, is equal at all points.
The pressure at inlet A = B = C = D regardless of the piping path.
The Red Run Drain has often filled to the top the last few years. This PRESSURIZES the system of inlets from the Street drains.
Soooo, lets say that street drain is about 30ft deep, and full of water – as it enters Red Run.
It exerts a force of several POUNDS per SQUARE INCH, and easily leaks thru any crack, loose fitting, coupling, etc.
The sump pumps cannot keep up and in fact add more water to the system, in a vicious cycle, – from the Storm Drains – to the sanitary(Sewer) drains, pushing toilet stuff into a basement.
Instead of being at the BOTTOM of the channel, these street drains would be better suited to the TOP, under the access easement.
** You can see where someone tried to be “slick”, cobbling up the manhole, a foot or two, with bricks, to no effect.
Do you fill your bathtub from the TOP, or from the bottom ? A pool uses the pressure from the bottom, to circulate the water up to the top.
There is a great reason most systems DO NOT add water to the bottom of a reservoir. The bottom has pressure !
City of Warren engineering staff has mentioned the crumbling streets of the NorthWest neighborhoods would get new concrete. The newer “edge drainage” channel may keep the road bed drier than before – but it won’t solve any flooding issue for residents near the Ryan Road at Red Run Bridge vicinity.
Notice the large stormwater pipe at the bottom of the bridge, gets COMPLETLY submerged every time the Red Run Drain fills near its banks.
There is a design fault causing grief for residents, that cannot be explained away by – “Act of God”. Humans built it, and they are responsible, for oversights, miscalculations, omissions, and errors.
Most of the stormwater comes directly from OaklandCounty via the 12TownsDrain aka GWK Retention Basin – into Warren – via the Red Run Drain.