Biological Assessment
** Recommended frequency – no more than 3 times a year, preferably between mid-July to mid-Oct **

Date: (mm/dd/yyyy)    Time: (military time)
IOWATER Monitor # # of Adults (incl. you)
Site Number # under 18

Other Volunteers Involved:


Was the stream dry when it was monitored?

Were Benthic Macroinvertebrates (BMI) Found?
(If no, please provide any relevant comments in the "Other Assessment Observations and Notes" section at the end of this form)

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High Quality Group
(pollution intolerant)

Caddisfly
Dobsonfly
Mayfly
Riffle Beetle
Snail (not pouch)
Stonefly
Water Penny Beetle

Middle Quality Group
(somewhat pollution tolerant)

Alderfly
Backswimmer
Crane Fly
Crawdad
Crawling Water Beetle
Damselfly
Dragonfly
Giant Water Bug
Limpet
Mussels/Clams
Orbsnail
Predaceous Diving Beetle
Scud
Sowbug
Water Boatman
Water Mite
Water Scorpion
Water Strider
Whirligig Beetle

Low Quality Group
(pollution tolerant)

Aquatic Worm
Black Fly
Bloodworm
Flatworm
Leech
Midge Fly
Mosquito
Pouch Snail
Rat-tailed Maggot
Water Scavenger Beetle


Others (no tolerance group assigned) (please describe)


Benthic Macroinvertebrate Collection Time (select one):
0-15 min    15-30 min    30-45 min    More than 45 mins

Collection Nets (How many nets are you using to collect critters?)
0    1    2    3    4    5    6 or more

Identification Confidence Level (Are you confident that your identification is correct?)
I'm not sure
I think they’ve been identified correctly
Some are definitely correct, I’m not sure about others (Please clarify in "Other Assessment Observations and Notes" section at the end of this form)
I’m fairly confident they’ve all been correctly identified
I guarantee they have been identified correctly

Stream Reach Length (How far along the stream did you search?)
0-25 meters    25-50 meters    50-75 meters    75-100 meters    More than 100 meters


Microhabitats (check all present in stream reach, check if sampled)
MicrohabitatsPresentSampled MicrohabitatsPresentSampled
Algae Mats Leaf Packs
Logjams Rocks
Root Wads Weed Beds
Fallen Trees Undercut Banks
Silt/Muck Rip Rap
Sand Overhanging Vegetation
Junk (tires, garbage, etc.) Other (describe):


Stream Habitat Type (check all types sampled in stream reach)
Riffle   Run   Pool

Aquatic Plant Cover of Streambed (at transect – check one)
0-25%    25-50%    50-75%    75-100%

Algae Cover of Stream Streambed (at transect – check one)
0-25%    25-50%    50-75%    75-100%

Is sewage algae present in the stream?

Stream Habitat Type (check all types sampled in stream reach)
Eurasian water milfoil
Brittle naiad
Bighead Carp
Curly-leaf pondweed
Purple Loosestrife
Silver Carp
Zebra mussels
Chinese mystery snails
Rusty Crawfish


Other Assessment Observations and Notes