Series 01 Episode 12: Types of Water and Reading Water
Audio
Structure


Slow tailwater, enough to freeze

Slow Water


Tailwaters
Spring Creeks
- Grow in flat land such as valley floors and pastures/open fields. The stream will try to meander (S shape) through the topography to slow itself down trying to reach an equilibrium
- Water percolating out of the ground at a constant temperature year round
- Stream usually narrow toward originating spring with marshy area surrounding
- Stream width grows as more water enters from other springs and banks are eroded
- Water does not freeze in winter
- Allows plant and animal life to grow year round
- Water quality is very clear
- Less susceptible to flooding as stream is fed by springs, not runoff
- Stream bed and surrounding geologic structures made of limestone. The chemical properties of limestone buffer or lower the pH (acidity) of the water
- Few to little boulders or structure in the stream
- Allows for a variety of animal life that require specific pH of water, such as cress bugs, shrimp, mayflies, etc.
- Cut banks where trout can escape from predators and sunshine
- Soft bottom
- Overhanging plants
- Submerged aquatic vegetation grows very thick as it does not die back in winter
- Fish may congregate closer to spring sources in hot weather to keep cool



Hot thunderstorm + cold water = fog

Local buildings and structures (bridges, fences etc.) may be made of limestone

Beavers inhabiting spring creek


Stream opens up downstream from the source

Freestone
- Stream fed by springs at headwaters and runoff throughout its course
- Size increases farther from source and may be tidal where meets ocean or bay
- Water colder closer to spring-fed sources
- Water levels and clarity fluctuate with precipitation
- Temperatures based on ambient temperatures
- Variety of stream bottoms from pebble-->rocks-->boulders
- More sources of structure to fish in, near, around (log jams, boulders, pools etc.)
- Fast loss of elevation creates waterfalls and plunge pools
- Fish species change from source to end based on water temperatures, tides, elevation etc.
A stream starts from springs and runoff

A stream starts as snow melt

The stream grows in size as more water enters the system


Cold, clear water with waterfalls as water heads from source downstream

"Pocket water" forms when elevation drops and the water is broken up by exposed rocks. Plunging water (plunge pools) increase Oxygen levels.

Plunge pool


Stream begins to open up once it reaches lower elevations





The body of water begins to broaden as it leaves elevation and encounters flatter land

River gains size and depth when changes to tidal
Brides on the East coast are typically built just above the fall line (interstate 95)
This section of the Potomac was flooded. The right side of the image shows the bank.
This section was about 10' deep now and dry two weeks later.
Junk that flows down, now is structure

Tidal
Outgoing tide

Flats


