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Delaware Basin EnviroDIY Monitoring Stations

Success Stories and Ongoing Efforts

Viewing 6 posts - 11 through 16 (of 16 total)
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  • #153332
    Dave Yake
    Participant

      Dave,

      Sounds good..  We have other approaches to manage turbidity/TSS, etc… especially in situations where the turbidity data is spotty due to heavy debris, etc….In that situation, we have worked out a method of selecting a single sample near the peak flow, determining TSS, and then modeling the entire rain event using the RO hydrograph…   I will bring a sample of this with me.   Marion and I have been thinking about how to build and program a very simple /low cost auto-sampler that is triggered just after peak flow.

      Thanks for getting back to me..

      Regards…  Dave

      #153335
      Kim Hachadoorian
      Participant

        Hello All,

        Our “High Flow” or “Peak Events” sub-team of Stream Stewards volunteers (Jeff Chambers, Rob Tuttle, Chris Marsahall, Jen Harris, and Chuck Wagner) have been doing some excellent work in recent weeks investigating the upstream impacts on the Rocky Run subwatershed in Wilmington, DE.  Following Rocky Run upstream out of First State National Historical Park led us to a channelized section of the stream that receives discharge from a number of pipes that drain a heavily developed area of shopping malls and residential neighborhoods.  One of our volunteers, Rob Tuttle, created a report summarizing our findings (attached here) that he shared with a New Castle County Council Member as well as the Stormwater and Environmental Programs Manager for the County, who has been conducting a follow-up investigation with staff from DNREC.  More details to come!

         

        #153339
        Lauren McGrath
        Participant

          Hi everyone!

          At Willistown Conservation Trust (WCT), EnviroDIY sensor station data are informing our land management and restoration practices.

          The Trust’s two EnviroDIY sensor stations are positioned up- and downstream of a riparian restoration project – a 5-acre lake bed composed of unconsolidated legacy sediments and lacking any riparian buffer, which will be replanted with trees. Before installing the sensor stations, we applied for funding to support this riparian planting through the PA Department of Conservation and Natural Resources (DCNR). The proposal adhered to the DCNR’s recommendations for regular herbicide application both in site preparation and long-term planting maintenance.

          However, once the EnviroDIY sensor stations were installed, we gained a deeper understanding of our stream reach and the surrounding lake bed, forcing us to reconsider this herbicide-heavy management plan.

          Between April and December 2018, the EnviroDIY sensor stations recorded 24 overbank floods – floods that otherwise may have gone undetected! Not only is our stream reach prone to flooding, but as the stream overflows its banks, the flood water spreads out across the flood plain and the meadow returns to a lake, with low velocity water pooling across the entire five acres.

          With these data in hand, we met with the DCNR to discuss the terms of our planting proposal. We shared with them our concerns that rigorous herbicide application at our planting site could be dangerous; based on the EnviroDIY data, which suggests that our site is prone to unpredictable and frequent flood events, we feared these chemicals could wash into the stream, threatening aquatic life.

          The DCNR agreed with our assessment, siting the EnviroDIY sensor station data as a powerful and convincing argument for altering herbicide use from our planting management plan. Our new proposal has significantly minimized herbicide applications with increased manual maintenance and features fewer but larger trees to withstand the frequent flood events.

          #153342
          George Seeds
          Participant

            Thanks for sharing the stories and info on the Rocky Run and Willistown efforts.   Very instructive – as someone who is newly involved with stream sensor monitoring.

            #153343
            Dave Yake
            Participant

              Dave Bressler,   I have just completed a new model for White Clay Creek & tributaries, Ridley Creek, and the East Branch of Brandywine Creek that is able to correlate the sediment loading during rain events as a function of RunOff Intensity * Surface RunOff at about 98% efficiency.  In addition, I have developed a simple tool that local other groups can use to predict rainfall runoff in their watersheds, compare it to calculations from their sensor data and use it in combination with Wikiwatershed to predict the corresponding sediment loading for a given rain event.  I will have some chart available to make it easier to discuss how this could be used by the extended group when it is of interest….regards… dave

              #153745
              Kim Hachadoorian
              Participant

                Last summer and fall, two of my Stream Stewards volunteers, Rob Tuttle and Jeff Chambers, worked with Dave and Matt at Stroud, to investigate the upstream impacts on Rocky Run, one of the streams we monitor as it flows through First State National Historical Park.  After analyzing several samples of a high conductivity pipe discharge, Rob prepared a summary report (attached) that we shared with Mike Harris, the Stormwater & Environmental Program Manager with New Castle County.  Mike conducted a further investigation and was able to resolve the issue this spring.  Mike explained: “It seems that an oil/water separator from the Sears Auto in the Concord Mall was inadvertently tied into the storm sewer system.   That illicit connection was has been capped.”  Mike added that Sears and others at the Concord Mall were very cooperative and eager to resolve the problem, which was not the result of intentional illegal discharge into the stream.  This success story is a great example of how citizen science can facilitate collaboration among different groups to mitigate stream pollution.

              Viewing 6 posts - 11 through 16 (of 16 total)
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