Stormwater is excess runoff from rain and snowmelt events that flows over land or impervious surfaces, such as paved streets, parking lots, and building rooftops, and does not soak into the ground. Some of the concerns around stormwater are that "the runoff picks up pollutants like trash, chemicals, oils, and dirt/sediment that can harm our rivers, streams, lakes, and coastal waters" -- and human health. [Source: EPA Stormwater Program](https://www.epa.gov/npdes/npdes-stormwater-program) _Lead image from Dr. Gloria Horning's [work](/notes/joyofsoy/11-09-2018/fighting-the-flood-community-activism-and-education-in-pensacola)_ ### How is stormwater regulated? Stormwater is one of the pollutants that is regulated under the [National Pollution Discharge Elimination System](https://www.epa.gov/npdes) (NPDES). "The NPDES stormwater program regulates some stormwater discharges from three potential sources: municipal separate storm sewer systems (MS4s), construction activities, and industrial activities." ### How is stormwater monitored? Monitoring for stormwater can be challenging. Monitoring activities could explore facets of stormwater such as: - The depth and duration of standing water in an area, - How much rainwater can be harvested from an area, - How much water can be absorbed by an area, - How different ground covers react to stormwater events, and - How well infrastructure is working to handle stormwater runoff. This page was created to compile some activities, questions, updates and projects surrounding issues of stormwater. Click the links below to add to this growing resource! ## Stormwater Activities [notes:grid:activity:stormwater] ### Frequently Asked Questions [questions:stormwater] **** ## Updates [notes:stormwater!question:stormwater] **** ## Project Pages - 2018 [Pensacola Stormwater Project](https://publiclab.org/wiki/pensacola-stormwater-project) - 2017 [New Orleans Stormwater Workshop Series](https://publiclab.org/notes/stevie/02-01-2017/stormwater-workshop-series-in-new-orleans) - 2016 [New Orleans Flood Sensing Project ](https://publiclab.org/wiki/depth-flood-sensing-in-new-orleans)** _Lead image from [Commons Wikimedia](https://commons.wikimedia.org/wiki/File:Stormwater_culvert_along_Dobney_Ave.jpg)_ ...
Author | Comment | Last activity | Moderation | ||
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stevie | "Here's another interesting idea I just found https://giphy.com/gifs/instrument-AsFbniBeEbecU " | Read more » | over 6 years ago | |||
RadioFreeTerry | "Hi Stevie...I'm no expert in this area but in my surfing I happened across a few links on this topic recently. Hopefully these will be of some use ..." | Read more » | over 6 years ago | |||
Ag8n | "Wondered about that. The main plant Had a storm sewer. One of the small satellite plants had something labelled a storm sewer. But, when the sam..." | Read more » | almost 7 years ago | |||
stevie | "Here's a great publication I just found by Hilairie Schackai from Water Wise in New Orleans that's a guide on Harvesting Rainwater. It includes inf..." | Read more » | almost 7 years ago | |||
warren | "Miriam from the Gulf Coast discussion list (not sure of her username here?) shared: I participated as part of the Disaster Response Team last summ..." | Read more » | about 7 years ago | |||
pdhixenbaugh | "As an add-on, most stormwater flows into storm drains and directly into streams without treatment. In combined sewer systems, CSOs happen periodica..." | Read more » | almost 8 years ago | |||
pdhixenbaugh | "Some other things -- certain types of industries can ask for an exemption from this permit if they claim they have zero stormwater pollution exposu..." | Read more » | almost 8 years ago | |||
pdhixenbaugh | "The general permits also come in different variants, and the Municipal Separate Storm Sewer Systems (MS4) permit is a big one. For example, my muni..." | Read more » | almost 8 years ago | |||
liz | "Many older cities treat stormwater before it is discharged. Quoting Kate Asher in Anatomy of a City (2005), "New York is one of only 800 or so citi..." | Read more » | almost 8 years ago | |||
warren | "Just to clarify, #NPDES is the National Pollutant Discharge Elimination System " | Read more » | almost 8 years ago | |||
stevie | "Yes! You can read about NPDES permit exemptions on this page "There are highly consequential exemptions listed in Section 402(l) of the Clean Wate..." | Read more » | almost 8 years ago | |||
stevie | "You can read about this on the NPDES wiki here. "There are two kinds of permits issued under NPDES: individual and general. Individual permits are..." | Read more » | almost 8 years ago | |||
stevie | "One way stormwater is regulated is through the National Pollutant Discharge Elimination System (NPDES). See NPDES wiki "NPDES only applies to “poi..." | Read more » | almost 8 years ago | |||
warren | "Hi, Stevie -- is it possible that anything from Model My Watershed could help answer the question? I think they may run these equations in a map fo..." | Read more » | almost 8 years ago | |||
klie | "[Test answer] " | Read more » | almost 8 years ago | |||
stevie | "Hi Chris! Sorry I didn't get a notification you wrote in here, so just seeing this now (off to GitHub to report a bug next!). @liz mentioned the Ra..." | Read more » | almost 8 years ago | |||
cfastie | "Hi Stevie, The plants you choose probably won't make much difference in water storage during storms because they can't absorb water fast enough. T..." | Read more » | almost 8 years ago |