MBSS Site Summary for: MO-P-437-210-97


Located on ROCK CR in the Rock Creek watershed, 8-digit code: 02140206.
This stream was visited in the spring on 3/7/1997 and again in the summer on 7/2/1997.

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 Good - 4.3 / 5.0
Benthic IBI Poor - 2.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 4,376 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 2.1 %
Agricultural Land Use 72.4 %
Forested Land Use 21.9 %


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

Physical Stream Habitat
Instream Habitat 15/20 (Suboptimal)
Epifaunal Substrate 8/20 (Marginal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		11/20 (Suboptimal)
Riffle Quality 15/20 (Suboptimal)
Shading 90 %
Embeddedness 25 %


Stream Water Quality:
Water temperature 19 ° C
Dissolved oxygen (DO) 7.9 mg/L
pH (lab) 7.12
Conductivity 129 µmho/cm
Alkalinity
(acid neutralizing capacity) 		401.9 µeq/L
Dissolved organic carbon (DOC) 2 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 14 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Potomac Sculpin 183
Blacknose Dace 98
White Sucker 28
Longnose Dace 26
Rosyside Dace 13
Common Shiner 11
Green Sunfish 7
Creek Chub 5
Cutlip Minnow 5
Fallfish 5
Tessellated Darter 5
Largemouth Bass 4
Bluegill 2
Redbreast Sunfish 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Northern Dusky Salamander

Crayfish:
Cambarus bartonii bartonii
Orconectes virilis

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus/Orthocladius Midge 21
Ephemerella Sulphur Mayfly 19
Prosimulium Black Fly 12
Naididae Aquatic Worm 6
Optioservus Riffle Beetle 4
Oulimnius Riffle Beetle 4
Dicranota Hairy-Eyed Cranefly 4
Eukiefferiella Non-Biting Midges 4
Polypedilum Non-Biting Midges 3
Tanytarsus Non-Biting Midges 3
Hydropsyche Net-Spinning Caddisfly 3
Rheotanytarsus Non-Biting Midges 2
Glossosoma Little Black Caddisfly 2
Amphinemura Spring Stonefly 2
Hemerodromia Tiny Fly 1
Parametriocnemus Non-Biting Midges 1
Thienemanniella Non-Biting Midges 1
Thienemannimyia Non-Biting Midges 1
Corynoneura Non-Biting Midges 1
Diplocladius Non-Biting Midges 1
Diamesa Bloodworm 1
Neophylax Caddisfly 1
Antocha Crane Fly 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.