Category: Citizen Science
Rock Run Water Tests September 2024
Here are the results of monthly water tests from September 4, 2024.
Air Temperature – 68° F
Water Temperature – 59.5° F
pH – 6.8
Alkalinity – 11.2
Linn Run Gauge – 1.45′
Linn Run Discharge – .88 ft³/sec
Some much needed rain came through, but Linn Run gauge and discharge were the same as last month.
Rock Run Water Tests 7.30.24
Results of water tests at the mouth of Rock Run on July 30, 2024.
Air Temperature: 70° F
Water Temperature: 65° F
pH: 7.13
Alkalinity: 9.6
Rain is needed desperately. The flow in Linn Run’s headwaters is just a trickle.
The USGS gauge at Linn Run was at 1.45′ and the discharge was .88 ft³/sec. This is the lowest reading we’ve had in 5 years of keeping records. This is still not a record. According to the USGS website, the lowest discharge was .16 ft³/sec recorded in 2012.
Contrast this with April 3rd of this year when the stream was flowing at 454 ft³/sec and the gauge measured 3.79′.
Rock Run Water Test Results
Monthly water quality tests were done at the mouth of Rock Run on June 30, 2024
Air Temperature – 72°
Water Temperature – 65°F
Linn Run Gauge – 1.63′
Linn Run Discharge – 4.57 ft³/sec
pH – 7.2
Alkalinity – 7.0
Rock Run Water Tests for 3.30.24
Spring is coming to the Laurel Highlands as the FTTU citizen scientists conducted water quality tests at the mouth of Rock Run.
pH – 7.2
Alkalinity – 3.5
Water Temperature – 41°
Air Temperature – 42°
Linn Run Gauge – 1.82′
Linn Run – 10.0 ft³/sec
Rock Run Water Tests 3.2.24
High flow today on Linn Run and Rock Run after heavy rains on February 29th. The Linn Run gauge bumped up again today with rain this morning.
It’s predictable, flow goes up, alkalinity goes down.
Air Temperature – 45°F
Water Temperature – 42.5°F
pH – 6.7
Alkalinity – 3.2
Linn Run Gauge Height – 2.3′
Linn Run Flow – 35.3 ft³/sec
Rock Run Water Tests for February
Water test results for February:
Water Temperature: 38° F
Air Temperature: 30° F
Linn Run Gauge: 2.08′
Linn Run Discharge: 24.2 ft³/sec
Flow: Med/High and clear
pH: 6.3
Alkalinity: 3.6
Alkalinity goes down with higher flow. This time from snow melt.
Rock Run Water Tests January 2024
The first monthly water tests at the mouth of Rock Run for 2024 were actually done on December 30, 2023.
Just a hundred yards or so below the test site rain changed to snow and began collecting in the tree tops and leaf litter. Winter is here!
Water Temperature – 39.5° F
Air Temperature – 32° F
pH – 6.8
Alkalinity – 6.0
Linn Run Gauge Height – 2.04′
Linn Run Discharge – 19.9 ft³/sec
Rock Run Water Tests 12.2.23
Recent rains have pumped up the volume of Rock Run on this Saturday, the final water test of 2023.
Air Temp – 53° F
Water Temp – 45.5° F
pH – 6.9
Alkalinity – 6.1
Linn Run Discharge – 16.1 ft³/sec
Linn Run Gauge Height – 1.98′
pH and alkalinity averages are down slightly from 2022, but considering a pH reading of 4.7 was recorded at this loctation in 2005 we can rest assured our limestone sand project has had a overall positive impact on the stream.
Click HERE to download the final pH chart for 2023.
Rock Run Water Tests 10.28.23
Water tests at the mouth of Rock Run were done on what may be the last “nice” Saturday of the year.
Air temp was 63° F
Water Temp – 55.5° F
pH – 7.1
Alkalinity – 10.0
Linn Run Gauge – 1.9 ft
Linn Run Discharge – 9.65 ft³/sec
Rock Run Water Tests 9.30.23
Here’s the results of water tests at the mouth of Rock Run.
Air Temperature: 59°F
Water Temperature: 56.5°F
Linn Run Gauge: 1.64′
Linn Run Discharge: 3.68 ft.³/sec
pH: 6.9
Alkalinity: 9.2
Flow: Low/Clear
The streams had decent flow, but we could use some rain to allow trout to move upstream to spawn.
