[Carol ArmstrongParticipant]

This is the report for 10/27

@shanemorgan. SL132(BCMC2S:Mill C-Hickory Hills). Logger stopped transmitting on 10/25 at 11:40 pm EDT. Battery was 3.59v. Is this battery failure? MonMW does not indicate the logger has a 4G board, but was it upgraded, so possible 4G failure?

@mcgrath, @weaver, @mooney.  SL155 (PURC1S:Ridley Ck U). No readings since 10/25 at 4:50am EDT. Battery was at 3.8v and 16.0% cellular signal.

@ferrell.  SL189 (BCPC1S:Independence School-UT to Pike Ck).  Battery is very low – 3.55v; station transmitting only once/day. Last signal was 10/26 1p.

[Carol ArmstrongParticipant]

This is the report for 11/4/20

@moore, SL150, BCMC4S:Marsh Creek D) Fairview Rd.  The values for all the sensors are up to date and look normal on the Time Series graphs, but on Browse Sites the CTD spark line values are displayed as -9999.

@collins, sl159, PUPC3S:Primrose Ck D at Delaware R, the station has not transmitted since 11/1.  Battery has been low and signals were intermittent since mid Oct.

@wulkowicz, @marioni, sl249, MSPL2S:UT to Plum Run, the battery has been declining since September, and now at 3.6v and could be recharged to prevent loss of continuous online transmission.

[Jim MooreParticipant]

I don’t know why the sparklines for the decagon are weird with spikes to -9999.  The decagon was out of service from 10/19 to 10/23 due to beaver damage.  I reconfigured with flex conduit and spliced the decagon cable so conductivity and temperature work but the depth reading is meaningless since there is no valid atmospheric reference.

[Shannon HicksParticipant]

Sensor values of -9999 mean the Mayfly logger isn’t getting a valid reading from the sensor.  The sparkline plots on a station’s MMW main page show all of the unfiltered data, so readings of -9999 throw off the scale and make the plots look unusable, but it’s not a big problem since it’s only a 72-hour graph and is only there to give you a general idea of the parameter’s behavior over the past few days.  Once you view that parameter in Time Series Analyst, any values of -9999 will be filtered out and not plotted on the graph.  So it will look like there’s missing data, but we do that so the vertical axis of the chart won’t be thrown off by such a large factor.

[Carol ArmstrongParticipant]

This is the report for 11/15/20

@lemon, @vogt.  SL153 (ULHC3S:Hunter Ck U-Strohl Valley), depth values became highly exaggerated (not seen in past year) since 10/27 to the present. Does this represent something going on in the watershed or problem with sensor or cables?

@archer, SL246 (PUMC1S:Mill Creek – Silver Lake Nature Center), Station has not transmitted since 11/13 EST, battery at 4.08v.

[Albert BarneyParticipant]

I was at SL153 on 11/16/20 and found leaves and sediment around probe cleaned and cleared.  Problem is location of probes in pool that has a back eddy so debris circles back to probe location!

[David BresslerParticipant]

@abarney, yes those types of issues are fairly common.  You could consider installing a shield to help with catching debris(?), see recent blog, https://www.envirodiy.org/hemispherical-shield-to-reduce-fouling-sensor/

[Kristine RogersParticipant]

Monitor My Watershed is showing the battery for SL133 has been transmitting intermittently since November 25 when we conducted the QC for the sensor.  Since then, I have cleared additional vegetation around the sensor to make sure the solar panel is getting enough light and swapped out the memory card.  Does this mean I need to get a new battery?

https://monitormywatershed.org/tsa/?sitecode=NHPK9S&variablecode=EnviroDIY_Mayfly_Batt&view=visualization&plot=true

 

[Shannon HicksParticipant]

Your station battery is fine, it’s the old 2G cellular board that is malfunctioning.  Those boards tend to go bad after a few year and need to be replaced.  But your station needs to be upgraded to 4G LTE in the next month or two anyway, so we will be making a maintenance visit to do that as soon as we’re cleared to travel out of state again.  In the meantime, you can always manually upload the CSV data file to the MMW portal so it will fill in all of the missing data that’s on the card but not in the database.

[Carol ArmstrongParticipant]

This is the report for 12/7/2020

@anderson, @gosse. SL151 (PUNR1S:Naylor’s Run). Congratulations on getting the sensors back into the restructured stream.  Is sediment a big problem in the new setting?

@mcgrath, @weaver, @mooney, SL155 (PURC1S:Ridley Ck U).  No transmissions since 12/7 at 6:05am EST, which is 13.5 hours ago as of this writing. Battery was at 4.0v.

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