![k-bob](/data/avatars/m/2/2769.jpg?1640368493)
k-bob
Well-known member
- Joined
- Jul 29, 2009
- Messages
- 2,373
big spring and big fishing have relatively high alkalinity, so they will have more aquatic bugs and brookies there may be very finnicky. however, most of even the class a PA brookie headwaters streams are low alkalinity, so fewer aquatic bugs and more opportunistic brookies:
http://www.apwc-pa.com/Petition/Appendix%20P%20-%20Class%20A%20Wild%20Trout%20Streams.pdf
with our highly acidic rain, headwaters areas, where water has had less exposure to soils and geology that can buffer acidity, will have fewer aquatic bugs, so fish there feed more opportunistically:
"The ecology of a drainage—from its headwaters to its point of termination—plays a crucial role in its acidity and alkalinity. They can vary greatly as its waters move downstream. At the headwaters, acidity is generally high with pH levels at or below 6.0. This is the result of rain and snow that have not captured surface effluents. This is why you won’t find large numbers of trout in headwater creeks. It is also the reason why brook trout, with their higher tolerance to low pH, are considered one of the ultimate headwater fish."
http://www.apwc-pa.com/Petition/Appendix%20P%20-%20Class%20A%20Wild%20Trout%20Streams.pdf
with our highly acidic rain, headwaters areas, where water has had less exposure to soils and geology that can buffer acidity, will have fewer aquatic bugs, so fish there feed more opportunistically:
"The ecology of a drainage—from its headwaters to its point of termination—plays a crucial role in its acidity and alkalinity. They can vary greatly as its waters move downstream. At the headwaters, acidity is generally high with pH levels at or below 6.0. This is the result of rain and snow that have not captured surface effluents. This is why you won’t find large numbers of trout in headwater creeks. It is also the reason why brook trout, with their higher tolerance to low pH, are considered one of the ultimate headwater fish."