Here’s the numbers taken October 2, 2019

Air Temperature – 76 Degrees F
Water Temperature – 65.5 Degrees F
pH – 6.7
Alkalinity – 15.8
Linn Run Gauge – 1.35
Linn Run Discharge – 1.95

Alkalinity numbers have spiked upwards since limestone was added in August. Could it be from the limestone more than 2 miles upstream, or is it just from lack of rain and low flow, or maybe both?
This month’s flow was the lowest recorded in the 2 years we have been doing the monthly tests.
If you look at the monthly photos, you will notice more and more black rocks starting in July. These rocks were probably flipped over from high flow from heavy rain in June and July. Click the link RR PH and Alkalinity 2019 for the results from the past year.

Flow goes down, alkalinity goes up. Here’s the Rock Run numbers for September 2109 (taken 8-31-19).
Lowest flow measured so far in 2019.

Air Temperature – 66 degrees F
Water Temperature – 61.5 degrees F
Linn Run Gauge – 1.44
Linn Run Discharge – 3.03
pH – 6.6
Alkalinity – 9.9
Flow – Low and Clear
Last Rain – 8-28-19

Here’s the numbers for our monthly water testing at the mouth of Rock Run.

Air Temperature: 76 degrees F
Water Temperature: 62 degrees F
Linn Run Gauge: 1.73
Linn Run Discharge: 5.84
Flow: Medium/Clear
pH: 6.4
Alkalinity: 5.2

Alkalinity tends to improve when the flow goes down. This was the lowest flow on our testing days for the year by the Linn Run gauge.
Check out the results from 2018-2109 here –  RR Alkalinity.

Here’s the results of our monthly water tests at the mouth of Rock Run for June 2019.

Air Temperature: 64 Degree F
Water Temperature: 55.5 Degrees F
Linn Run Discharge: 21.1
Linn Run Gauge: 1.98
pH: 6.53
Alkalinity: 4.1
Flow: Medium/Clear

Water testing was done May 1st. The numbers are:

Air Temperature: 82 Degrees F
Water Temperature: 58 Degrees F
pH: 6.4
Alkalinity: 3.0
Linn Run Gauge: 1.97
Linn Run Discharge: 19.6
Flow: Med-High, Clear

Monthly Rock Run water testing was done on Saturday April 6, 2019.

Air Temperature – 54 degrees F
Water Temperature – 43.5 degrees F
Linn Run Gauge – 1.86
Linn Run Discharge – 14.4
pH – 6.5
Alkalinity – 4.5
Flow – Moderate and Clear

Monthly water testing at the mouth of Rock Run was done on Saturday, March 2.
Air Temperature – 30 degrees F
Water Temperature – 35.5 degrees F
Linn Run Gauge – 1.94
Linn Run Discharge – 23.7
pH – 6.2
Alkalinity – 2.4
Flow/Conditions – Medium, Clear

It was a beautiful winter day in Linn Run State Park with several inches of fresh snow.
Here are the results of water testing at the mouth of Rock Run recorded on Saturday, February 2, 2019.

Air Temperature – 30 degrees F
Water Temperature – 30 degrees F
pH – 6.5
Alkalinity – 2.2
Linn Run Gauge – 1.82
Discharge – 16.9

We also collected some snow in the area, allowed it to melt, and tested that.
The snow melt had a pH of 5.8 and an alkalinity of 2.2.

Here are the results of Rock Run water testing for January, 2019.
Air Temperature: 36 degrees F
Water Temperature: 41 dgrees F
pH: 6.3
Alkalinity: 2.9
Linn Run Gauge: 2.1
Linn Run Discharge: 33.2

We also took samples on Linn Run above the mouth of Rock Run
Water Temperature: 39.5 degrees F
pH: 6.7
Alkalinity: 6.0

Here’s the data for this month’s water testing from the mouth of Rock Run.

Air Temperature: 37 degrees F
Water Temperature: 40 degrees F
Linn Run Gauge: 2.10
Linn Run Discharge: 33.2
pH: 6.5
Alkalinity: 3.2