[David BresslerParticipant]

Purpose:  rating curves and grab samples

[Carol ArmstrongParticipant]

What changes have others seen this summer in the streams being monitored? In the downstream portion of the Pickering, in Phoenixville, the last rains in September and October changed the stream bed, shifting large amounts of rip rap in the stream that divided the stream, so that the flow by the sensor station is much faster. It could bifurcate the discharge curve. What changes have others seen?

Has anyone with a station installed one+ year ago seen any increase in water temperature? Temperatures look higher in July 2018 than in July 2017 in some of the DRWI sites, which was surprising because this summer seemed cooler than usual. Long term trends show the increasing stream temperature in two of three Chester County streams measured by USGS. https://pubs.usgs.gov/sir/2017/5025/sir20175025.pdf

[Matt GisondiParticipant]

Hi everyone, I just posted the latest grab sample results in the Uploaded Files section of the group. It’s titled “Stroud Grab Sample Lab Results _18.12.12” under the calculator folder. Message me here if you have any questions.

[Matt GisondiParticipant]

Hi All,

I just finished doing some housekeeping regarding the discharge rating curves. There are a couple updated curves for sensor station sites that I’ll be uploading today. I’ll be taking down the older ones as well. As an FYI, Stroud will be taking a more active role with using the rating curves for watershed analysis, so thank you to the groups who have continued to update and upload their rating curves onto Wikiwatershed.

– To the forum users who are uploading rating curves, be sure to take down the older ones or notify the owner of the older curve to offload it to keep the file system clean and without duplicates.

– To the forum users who have independently been developing their rating curves, could you upload your most updated rating curve onto here for Stroud to look at?

– To the forum users who have independently been analyzing the grab samples or have been using another organization to do the analysis, could you upload the chemistry results along with the corresponding grab sample number, date and time of collection, and any other related info to the sample(s)?

If anyone has questions regarding this update, ask them in this thread of the forum rather than email to make sure everyone in the DRWI group can see both question and answer.

Thank you,

Matt Gisondi, Stroud Water Research Center Citizen Science Program

[Chloe WangParticipant]

Hi Matt,

We don’t do rating curves at Bartram’s Garden since we are a tidal site but just want to clarify – is your request for data from independently analyzed grab samples only in relation to rating curves? Or do you generally want any data from grab samples that we are collecting ourselves through our volunteer monitoring program?

Chloe

[David BresslerParticipant]

Update on Stroud Center ability to receive grab samples for Total Suspended Solids and Chloride analysis:  Those of you who are developing rating curves, if you are wanting/needing to collect storm samples we can accept them on case-by-case basis.  Please check with the Stroud Center (Dave Bressler, dbressler@stroudcenter.org) first to confirm.

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