Posted in Citizen Science Rock Run

Rock Run Water Tests March 2023

Tree Fall Rock Run

Monthly Rock Run Water Tests 2-25-23

It was a cold morning as the FTTU citizen scientists conducted monthly pH and alkalinity tests with frozen hands.

We arrived to find even more trees and branches down over the stream.

Air Temp – 28° F
Water Temp – 37.5° F
pH – 7.3
Alkalinity – 3.4
Linn Run Discharge – 21.1 ft³/sec – Medium High

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 Rock Run

Limestone Moved to Stream Banks in Rock Run Headwaters

Twenty-Five tons of limestone sand delivered in May was moved to final position along the stream banks of the East Branch of Rock Run in the stream’s headwaters.

The sand will slowly wash into the stream and buffer acidity creating more hospitable water chemistry for trout and other aquatic organisms.

This makes a grand total of 600 tons of sand placed in Rock Run since the inception of the project in 2005

Your raffle ticket/donation dollars at work, FTTU purchases 25 tons of high calcium limestone every 2-3 years for about $2,000.

FTTU’s project manager, Denny Hess was on hand to oversee the transfer and placement. Denny had the sand placed in 3 different locations.

A big Thank You to Linn Run Park Manager Corey Snyder and the Park Maintenance Staff for their help. The use of their front loader and dump truck saved many hours of hard labor.

Sand Pile
Limestone sand pile ready to move into final position.
Skid Steer Loader Dumping Limestone Load
Dumping sand at stream's edge.
Skid Steer Loader Moving Limestone
Front Loader moves limestone sand to stream bank.
Sand on Stream Bank
Limestone sand spread on headwaters stream bank.
Huge thank you to these guys, DCNR Maintenance Crew with Linn Run Park Manager Corey Snyder.
Low Water
Rock Run low flow in late summer.
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.