Closterium (Closterium sp.) 
Green algae, planktonic (floater)
Family Desmidiaceae. 
White scale bar is 5 microns.

Cells curved (crescent-shaped), rarely straight, with or without median constriction.  End of cells vary, pointed, blunted, or rounded. Cell wall smooth with little ornamentation; longitudinal striations. Pigments green, occasionally yellow-green.
Cell diameter: 16 - 75 x Length: 100 - 800 microns

Pediastrum (Pediastrum sp.) 
Green algae, planktonic (floater)
Family Desmidiaceae. 
White scale bar is 5 microns.

Free-floating colony of plate-like cells in the interior and exterior cells with one or two spines. The number of cells often times is characteristics of the species. Cell walls resistant to decay and many species are found in fossil condition. Cell wall may be smooth or granulated. Colony size is up to 40 microns.

Scenedesmus(Scenedusmus sp.) 
Green algae, colonial, planktonic (floater) and/or periphytonic (attached)
Family Scenedesmmaceae.
White scale bar is 5 microns.

  Colony usually of four cells, the two inner cells are oval to box-shaped, whereas the two outer cells have spines and may be crescent-shaped. Occasionally, some colonies maybe found with 12 or more cells Cell length 12.5 microns, width 5 microns.

Chroomonas(Chroomonas sp.) 
Planktonic (floater, able to propel itself in the water column)
Family Cryptochrysidaceae
White scale bar is 5 microns

Tear-drop shaped cells with two unequal lengthen flagella are attached towards the pointed end of the cell. Flagella two to three times length of cell. Eyespot may be present, two or three blue-green to bluish chloroplast bodies may be present. Cell length 13, width 7 microns.

Chlamydomonas (Chlamydomonas sp.)
Flagellate. Planktonic (floater, able to propel itself in the water column)
Order Family Chlamydomonadaceae.
White scale bar is 5 microns

Cells round to oval in shape, with one cup-shaped chloroplast and one or more chloroplastid body. Eye-spot may be present. Two flagella usually of equal length, attached in the cup-shaped chloroplast area. Cell usually covered in a clear to semi clear gelatinous-like layer. Some 500 plus species have been identified. Cell diameter 5 to 10 microns.

Phacus (Phacus sp.)
Flagellate. Planktonic (floater, able to propel itself in the water column) or periphytonic (attached)
Family Euglenaceae.
White scale bar is 5 microns

Solitary free-swimming. Cell top-shaped with a longitudinal spiral with a rigid shape. Cell wall often with dot-like ornamentation arranged in the longitudinal axis. Single flagella attached in a gullet at the rounded end of the cell. One or two ring-like bodies located within the center of the cell. Eyespot may be present in some species.

Euglenoid (Eutreptia sp.)
Flagellate. Planktonic (floater, able to propel itself in the water column)
Family Euglenaceae.
White scale bar is 5 microns

Cell shape variable, though usually an elongated tear-drop to pear-shaped to stubby pencil-shaped. Cell wall ornamented with small dot-like lines arranged length-wise to cell body, though spirally twisted. Two equal lengthen flagella attached at the rounded end of the cell, in the area of the gullet. Gullet is generally present; as are vacuoles. Cell diameter 23, length 178 microns.