MBSS Site Summary for: MO-P-204-137-97


Located on ROCKY GORGE RES UT1 in the Rocky Gorge Dam watershed, 8-digit code: 02131107.
This stream was visited in the spring on 3/5/1997 and again in the summer on 7/29/1997.

Index of Biotic Integrity (IBI) Results:

An Index of Biotic Integrity (IBI) is a scientific tool used to identify and classify stream health. An IBI associates anthropogenic influences on a stream or with biological condition in the stream, and is formulated using data developed from biosurveys.
Details on the development and application of MBSS IBIs are in this document.
Fish IBI Poor - 2.7 / 5.0
Benthic IBI Good - 4.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 613 acres Cows standing in a stream at a site with high agricultural land use. Cows survey the sampling procedure at this extreme example of a highly agriculturalized site.
Urban Land Use 6.5 %
Agricultural Land Use 47.5 %
Forested Land Use 45.7 %


Stream showing woody debris, logs, and rocky substrate.
An example of woody debris in a stream.

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 17/20 (Optimal)
Velocity/Depth Diversity 9/20 (Marginal)
Pool Quality
Pool Extent = meters 		10/20 (Marginal)
Riffle Quality 12/20 (Suboptimal)
Shading 95 %
Embeddedness 20 %


Stream Water Quality:
Water temperature 20.4 ° C
Dissolved oxygen (DO) 8.8 mg/L
pH (lab) 7.27
Conductivity 180 µmho/cm
Alkalinity
(acid neutralizing capacity) 		336.4 µeq/L
Dissolved organic carbon (DOC) 3 mg/L

Biological Stream Condition:

Surveys of the organisms living within a stream can give indications of stream health. Species richness, or the number of different species present, as well as indicator species (species whose presence, absence or abundance can serve as a measure of environmental conditions) are informative for stream health. 		Close-up of a mayfly indicator species.

Fish Survey Results:
The following 8 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Tessellated Darter 141
Brown Bullhead 107
Blacknose Dace 37
Yellow Bullhead 28
Largemouth Bass 27
Creek Chub 19
Green Sunfish 4
Cutlip Minnow 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Eastern Box Turtle
Fowler's Toad
Northern Dusky Salamander
Northern Green Frog
Northern Two-Lined Salamander
Pickerel Frog

Crayfish:
Orconectes virilis

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Prosimulium Black Fly 12
Eukiefferiella Non-Biting Midges 12
Cricotopus/Orthocladius Midge 10
Orthocladiinae A Non-Biting Midges 9
Diamesa Bloodworm 8
Orthocladius Non-Biting Midges 7
Ephemerella Sulphur Mayfly 6
Baetis Blue-Winged Olive Mayfly 5
Sympotthastia Non-Biting Midges 4
Prostoia Spring Stonefly 4
Hemerodromia Tiny Fly 3
Amphinemura Spring Stonefly 2
Diplectrona Net-Spinning Caddisfly 2
Parametriocnemus Non-Biting Midges 2
Paraleptophlebia Blue Quill Mayfly 2
Hydrobaenus Midge 1
Cheumatopsyche Net-Spinning Caddisfly 1
Neophylax Caddisfly 1
Ameletus Combmouthed Minnow Mayfly 1
Dolophilodes Medium Evening Sedge Caddisfly 1
Brillia Non-Biting Midges 1
Zavrelimyia Non-Biting Midges 1
Cordulegaster Spiketail Dragonfly 1
Naididae Aquatic Worm 1
Psephenus Water Penny 1
Eccoptura Yellow Stone Stonefly 1
Kick net sampling for macroinvertebrates.
Sampling with a kick net.

Information disclaimer: The information and data on this page is for guidance and general planning purposes only. It should not be used to make decisions on specific matters.