MBSS Site Summary for: MO-P-501-105-97


Located on CABIN JOHN CR UT1 in the Cabin John Creek watershed, 8-digit code: 02140207.
This stream was visited in the spring on 3/24/1997 and again in the summer on 7/14/1997.

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 Fair - 3.0 / 5.0
Benthic IBI Poor - 1.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 60 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 11.8 %
Agricultural Land Use 65.3 %
Forested Land Use 22 %


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

Physical Stream Habitat
Instream Habitat 8/20 (Marginal)
Epifaunal Substrate 8/20 (Marginal)
Velocity/Depth Diversity 2/20 (Poor)
Pool Quality
Pool Extent = meters 		6/20 (Marginal)
Riffle Quality 0/20 (Poor)
Shading 50 %
Embeddedness 20 %


Stream Water Quality:
Water temperature 20.5 ° C
Dissolved oxygen (DO) 7.8 mg/L
pH (lab) 7.72
Conductivity 150 µmho/cm
Alkalinity
(acid neutralizing capacity) 		1885 µeq/L
Dissolved organic carbon (DOC) 3.2 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 2 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Creek Chub 80
Blacknose Dace 13
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Dusky Salamander
Northern Green Frog
Northern Two-Lined Salamander
Northern Watersnake

Crayfish:
No crayfish noted.

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus/Orthocladius Midge 27
Thienemannimyia Non-Biting Midges 12
Stegopterna Black Fly 11
Diamesa Bloodworm 7
Pisidium Freshwater Pea (Pill) Clam 7
Conchapelopia Non-Biting Midges 6
Eukiefferiella Non-Biting Midges 5
Parametriocnemus Non-Biting Midges 4
Agabus Predatory Aquatic Beetle 3
Crangonyx Amphipod 3
Argia Narrow-Winged Damselfly 2
Girardia Freshwater Flatworm 1
Pseudosuccinea Air Breathing Freshwater Snail 1
Physa Air-Breathing Freshwater Snail 1
Amphinemura Spring 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.