Storm Water Pollution contact person: Jenny Paquet, Town Planner 392-3800 x 121
West Greenwich Storm Water Management Plan adopted June 2003 (See below for recent amendments)

**Final 2009 Storwater Annual Report**
Attachment 1, Attachment 2, Attachment 3, Attachment 4

 

Recent Amendments to Storm Water Management Plan adopted Febrary 17, 2010. These recent amendments are to bring the Plan into conformance with the requirements of the General Permit in response to the review comments from RIDEM

Illicit Discharge Detection and Elimination Ordinance, as adopted June 10, 2009

Rain Garden and Rain Barrel info is at the bottom of this page!

 

It's no joke: whatever enters a storm drain flows directly into our local waters. The storm drain system
provides no filters and no treatment. Help us keep our waters clean.
Never dump, wash, or rake anything into the path of storm drains.

Here is our brochure for 10 Simple Things You Can Do to Help Clean West Greenwich Waters (rev. 4/09)
This brocure contains links to more information about watersheds, lawn care, Septic System Handbook, water conservation, and how you can get involved.

Here is a simple Homeowner's Guide to Septic Systems.

Here is a great website for more information: RI Stormwater Solutions

Why do I have to care about stormwater? When it rains, the water hits the ground and either soaks into the ground, or travels over the surface. As it travels, it picks up stuff like small dirt particles, oils that drip from cars, fertilizer and nutrients from the lawn, and germs (pathogens) from pet wastes. All this stuff travels with the water to wherever it ends up, which could be a nearby pond, stream, or wetland.

What are those grates on the side of the road for? When it rains, since water can't soak into the street pavement, it travels downhill into these grates, called stormwater catch basins, or a "stormdrain." The road is actually designed to be higher in the center (the "crown") than along the edge (the "gutter"), so that water gets off the road to provide a safe driving surface. The water travels in the gutter to a catch basin, then into an underground pipe system that empties either into a man-made "water quality basin" in newer developments, or directly into ponds or streams. So, please don't dump anything into these stormdrains! Also, if you see leaves clogging it up on top, please brush them off, because blocking these drains could cause flooding on the street. The public works guys actually go down into these catch basins with a shovel to clean out the sand that accumulates in the bottom, as needed.

But there are no stormdrains on my street. Not every road has stormdrains, but look a little closer--the water still goes somewhere! There may be breaks in the curbing, with pavement and maybe some rough rocks leading to a shallow ditch ("swale") along your front lawn. Don't fill in that ditch! This is where the water goes when it rains, and you want it to keep on going along, instead of backing up in your yard. You probably also have a pipe under the end of your driveway. You guessed it! It is there so the water can keep going. If this pipe gets crushed or clogged with leaves and rocks, you should fix it. Some roads don't have curbing, and in this case the water flows right off the road, ususally into a ditch, or down into the woods.

Ok, what was that "water quality basin" you were talking about? These look like small ponds, but most of the time don't actually have any water in them. You'll notice that all the catchbasins and/or swales in your neighborhood lead into these ponds. This is an effort to allow the sand (called "sediment") and pollutants to settle out of the water before it continues on into a wetland or stream, or infiltrates into the ground. This generally takes about 2 or 3 days to dry out after a rain storm. Some of these ponds just stay wet all the time. Don't dump your leaves and grass clippings in these ponds! First of all, you can compost this stuff. Second of all, these ponds were designed to be a certain size to hold a certain amount of water and if you fill them in there is less room for the water, but more importantly, these organic materials will stay wet or submerged and turn to muck, which can smother the vegetation that is supposed to help the drainage pond function properly. It also contributes nutrients to the water system.

Why are nutrients bad? Nutrients are not bad, we need them and plants need them to live. But anything in excess can be bad ("nutrient loading"). The nutrient balance is somewhat of a delicate thing. Too much, and different species take over. Basically you are providing food for algae to grow in the pond, and in the downstream water bodies. Too much algae can block sunlight from getting to the lower plants causing them to die, and decaying algae actually feed bacteria who steal oxygen from fish. I think you can get the picture of what a tangled web this is. Lawn fertilizer is the #1 contributer to scum in the pond. Check out this Lawn Care Fact Sheet and the URI's Healthy Landscapes website for healthy lawn care tips.

Have you ever wondered what a Rain Garden is? It is a simple depression you make in your lawn to hold rain water while it soaks into the ground. In this depression, you plant a garden of plants that take advantage of the periodic soaking, both taking up the water and helping it to infiltrate into the ground. This is good because it helps recharge the groundwater for your well, and it also helps clean that stormwater before it flows into a nearby stream or pond. It also takes away some of the volume of water that might be contributing to washouts somewhere else on your property, or just areas of flooding in general.

Here are some good resources with information on how to make them and what kind of plants to plant:

List of Suggested Rain Garden Plants for Rhode Island (you'll need to scroll down a bit to get to the list) available on URI Healthy Landscapes website

Rain Gardens in Connecticut: A Design Guide for Homeowners

Landscapes for Maine: Adding a Rain Garden to Your Landscape

*NEW*Just planting native species in your landscaping goes a long way. Think about it-- you don't need pesticides, or have to keep watering. Let our existing climate, rainfall, and wildlife (including existing beneficial insects) do the work for you! The RI Wild Plant Society has a good list of native RI flowering trees and shrubs (and tells you what is invasive in RI so you know what to avoid) that also tells you which plants are valuable for wildlife, if you are in to that kind of stuff. Check out the RIWPS's fact sheet "Going Native: Selecting Non-invasive Plants for Your Landscape." Use this in conjuction with the URI Cooperative Extension's Sustainable Trees and Shrubs guide to give you details on the individual plants (how big they get, what kind of conditions you can plant them in, etc.)

To conserve water (and reduce runoff) you can install a Rain Barrel on your down spouts. Check out these upcoming events where you can purchase a rain barrel in advance: URI Spring Festival at East Farm (Mother's Day Weekend, every year), URI GreenShare Field Day (Fall weekend, every year). Or, you can make your own. Here are a few sources: URI Healthy Landscapes, Rain Barrel/Rain Garden poster by SRF and CWP.

Ok, why else are we doing all of this? West Greenwich is covered under a General Permit issued by RIDEM (as authorized from the US EPA) to discharge storm water off of roads, property, etc. through a storm drainage system (whether pipes or natural swales, etc.), which ultimately flows to various water bodies. The whole point of all this is to reduce or eliminate as much pollution as possible from contaminating water bodies. Some types of pollution are obvious, like someone pouring motor oil down the catch basin, but other types of pollution are not so obvious. The technical jargon for this is "non-point source pollution," meaning, "pollution that comes from places other than out of a pipe." This not-so-obvious pollution is the dirty bath water when the Earth takes a shower, so to speak. When it rains, (or when you water your lawn or wash your car) the water washes over different types of surfaces (lawns, parking lots, roads, forests, etc.) and picks up different types of things (fertilizers, pesticides, soaps and grime from washing your car, oils from leaking cars in a parking lot, pet waste, etc.) with it as it continues to travel on as "runoff." The cleaner the surface is to begin with, the cleaner that runoff will be. And that is what we are trying to achieve. This is the same water that we swim in, fish live in, and we drink.

What do you mean this is the water we drink? I have a well and my drinking water comes from deep in the ground. Doesn't the soil purify that water by the time it gets down to my well? Well, yes, to some extent, but it is not as perfect as you might think. And it is all connected. The ground will naturally purify some of this water if it infiltrates down into the soil, but on hard surfaces, the water will just run off along the surface. Also, you want to be really carefull about what you do around your well. You are responsible for your own well. See URI Home*A*Syst program for Healthy Drinking Water and Water Quality Protection. They offer excellent workshops!

 

If you have any concerns, or to file a complaint of illegal dumping, please
contact the Town Planner, Jenny Paquet at 392-3800 x 121