local charcoal from circle Fire with stone, vegetation, Air, Water, Fire & Earth cosmos

Wallkill River

Dashville NY

"...The chemical, thermal and physical changes which flowing water undergoes when it is stilled can seriously contaminate a reservoir and the river downstream. The extent of deterioration in water quality is in general related to the retention time of the reservoir — its storage capacity in relation to the amount of water flowing into it. Water in a small headpond behind a run-of-river dam will undergo very little or no deterioration; that stored for many months or even years behind a major dam may be lethal to most life in the reservoir and in the river for tens of kilometres or more below the dam.

Water released from deep in a reservoir behind a high dam is usually cooler in summer and warmer in winter than river water, while water from outlets near the top of a reservoir will tend to be warmer than river water all year round. Warming or cooling the natural river affects the amount of dissolved oxygen and suspended solids it contains and influences the chemical reactions which take place in it. . Altering natural seasonal changes in temperature can also disrupt the lifecycles of aquatic creatures — breeding, hatching and the metamorphosing of larvae, for example, often depend on thermal cues. ..."

- https://www.internationalrivers.org/dams-and-water-quality...

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please consider a contribution toward the river, stone & charcoal installation markings... I'm seeking support & contributions through Patreon to continue this project... 

https://www.patreon.com/GregPatch

with over 2,000 miles drawn/marked, over 580 sites drawn/marked along 31 rivers and creeks and with over 200 cities/towns with 7 Eastern US states since 7/27/2016...

Love & Peace with CoCreativity with all

~ Elements are Life ~