Posted in Citizen Science Rock Run

Rock Run Water Tests February 2023

Rock Run January 29, 2023
Rock Run January 29, 2023

“If a tree falls in the forest, and no-one is there to hear, does it make a sound?”

The answer is “Yes”, and a pretty loud one too when this one came crashing down roots and all across Rock Run, probably during high winds from the storm on 1/25/23.

Results of water tests 1/29/23
Water Temperature: 38.5°
Air Temperature: 38°
pH: 7.8
Alkalinity: 3.8
Linn Run Gauge: 1.94′

Posted in Citizen Science Rock Run

Rock Run Water Tests 1-1-23

Mouth of Rock Run
Happy New Year. Beautiful winter scene on Rock Run.

The first of the year brings some snow but warming temperatures.

Air Temperature – 37°F
Water Temperature – 34.5°F
Linn Run Gauge – 1.81 ft.
pH – 7.5
Alkalinity – 4.3 ppm

Posted in Citizen Science Rock Run

Final Rock Run Water Tests For 2022

Mouth of Rock Run 12-3-22
Mouth of Rock Run 12-3-22

FTTU Citizen Scientists wrapped up monthly water tests at the mouth of Rock Run for 2022. After a few months of low water, The flow was at its highest since April. Readings showed pH at 7.4, and Alkalinity at 5.5. Air temperature was 50° and water temperature was 43°. Linn Run gauge was at 2.03 ft. and discharge was 16.3 ft³/sec.

Averages over the 12 months of 2022 were 7.55 pH and 6.85 alkalinity. Alkalinity was down a bit from 2021 but average flow was a little higher. Those two things go hand-in-hand. When flow is up, alkalinity goes down. Overall averages show significant improvement and slow but steady progress since we started doing monthly tests in 2017. Alkalinity that year was 5.9 and pH was 6.47.

The pH and alkalinity chart for 2022 can be seen here – pH Chart 2022

Posted in Citizen Science Conservation Rock Run

Rock Run Water Tests for November

Stream-Side Lab
Denny Hess prepares samples at our stream-side lab

Water quality tests for November:

Air Temperature: 42° F
Water Temperature: 47.5° F
pH: 7.5
Alkalinity: 12.4
Linn Run Gauge: 1.46
Linn Run Flow: 1.9 ft³/sec

A splash of rain brought water levels up a bit but alkalinity also went up. Maybe recent addition of limestone has helped.

Posted in Citizen Science Rock Run

Rock Run Water Tests 10-1-22

Rock Run
Mouth of Rock Run 10-1-22

Air Temperature – 49°F
Water Temperature – 51.5°F
pH – 7.6
Alkalinity – 11.0

Some rain would be nice. Flow only slightly better than September. Trout are getting ready to spawn and will need to move.

Posted in Citizen Science Rock Run

Rock Run Water Tests For September

Water tests for September were done on Sautrday the 2nd.

Air Temperature: 66° F
Water Temperature: 65° F
pH: 7.4
Alkalinity: 12.3
Linn Run Gauge: 1.34
Linn Run Discharge: 1.2

Lowest flow of the year.

Stream may look dried up in photo below, but there is flowing water and trout can find refuge in pools.

RR Low Flow 2022
Low flow for Rock Run in 2022 was in September. Linn Run gauge height was at 1.34.
RR High Flow 2022
High flow for Rock Run in 2022 was in January. Linn Run gauge height was 2.52
Posted in Citizen Science Rock Run

Rock Run Water Tests August 2022

Rock Run August 22
Some Rain Would Be Nice

It’s the dog days and low flows of summer in the Laurel Highlands.

Here’s the results of our monthly water tests:

Air Temp – 69°F
Water Temp – 65.5°F
Linn Run Discharge – 1.90 ft³/sec
Linn Run Gauge – 1.42 ft
pH – 7.4
Alkalinity – 9.1

Lowest flow and highest water temperature of 2022 so far. Still hospitable to trout.

Flow goes down alkalinity goes up.

Posted in Citizen Science Rock Run

Rock Run Water Quality Tests for July

Mouth of Rock Run July 2022

Here’s the results of the monthly water quality testing at the mouth of Rock Run for July 2022.

  • Air Temperature: 68° F
  • Water Temperature: 62.5° F
  • pH: 7.4
  • Alkalinity: 7.7
  • Linn Run Gauge Height: 1.73 ft.
  • Linn Run Discharge: 7.0 ft³/sec

For all the stats for 2022, see the Rock Run Page.

Posted in Citizen Science Rock Run

Rock Run Water Tests for June

Rock Run June

Here’s the results of the monthly water tests for June

Air Temperature: 58° F
Water Temperature: 57° F
Linn Run Discharge: 12.3 ft³/sec
Linn Run Gauge: 1.86 ft.
Alkalinity: 5.5
pH: 7.6

Posted in Citizen Science Rock Run

Rock Run Water Test Results For May

How’s that saying go? “Neither rain nor snow…”. The FTTU citizen scientists braved the rain, cold and wind to make their appointed rounds on Sunday May 1st. Monthly test results for the mouth of Rock Run were as follows:

• Air Temperature – 50° F
• Water Temperature – 48° F
• Linn Run Discharge – 13.9 ft.³/sec.
• Linn Run Gauge – 1.9 ft.
• pH – 7.7
• Alkalinity – 4.2

We also checked the contents of two leaf packs that were placed in Rock Run at the mouth in December. One of the packs had been washed away, but we counted 132 macroinvertebrates in the other. The majority of the sample was stoneflies and of those, the leaf eating roachlike stonefly was the most numerous. Also collected were net spinning caddis larva, a few mayflies, a crayfish, some sowbugs and a couple of cranefly larva.

The good news is that the stoneflies and mayflies are considered most sensitive to pollution so the fact that at least stoneflies are thriving in the stream is an indicator of good water quality.

Leaf Packs are leaves collected along the stream and placed into a net bag similar to what you might find potatoes or onions sold in at the grocery store. The pack is anchored to the stream bed and allowed to “soak” for a couple of months. The pack is then collected and sorted through to find what organisms have taken up residence there.

Stoneflies
Stonefly nymphs from Rock Run.
Crane Fly Larva
Large Cranefly Larva from Rock Run.