MBSS Site Summary for: CABJ-102-R-2003

Site Photos

Field photo showing stream conditions at site CABJ-102-R-2003-766 (Opens in a new window) Field photo showing stream conditions at site CABJ-102-R-2003-767 (Opens in a new window) Field photo showing stream conditions at site CABJ-102-R-2003-768 (Opens in a new window) Field photo showing stream conditions at site CABJ-102-R-2003-769 (Opens in a new window)

Located on CABIN JOHN CR in the Cabin John Creek watershed, 8-digit code: 02140207.
This stream was visited in the spring on 4/3/2003 and again in the summer on 6/17/2003.

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 - 2.3 / 5.0
Benthic IBI Poor - 2.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 587 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 82 %
Agricultural Land Use 9 %
Forested Land Use 7 %


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

Physical Stream Habitat
Instream Habitat 10/20 (Marginal)
Epifaunal Substrate 11/20 (Suboptimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 54 meters 		12/20 (Suboptimal)
Riffle Quality
Riffle Extent = 23 meters 		12/20 (Suboptimal)
Shading 70 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 16.6 ° C
Dissolved oxygen (DO) 8 mg/L
pH (lab) 7.82
Conductivity 583 µmho/cm
Alkalinity
(acid neutralizing capacity) 		933.6 µeq/L
Dissolved organic carbon (DOC) 1.5 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 5 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 74
Creek Chub 38
American Eel 4
White Sucker 4
Longnose Dace 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern Gartersnake
Northern Two-Lined Salamander

Crayfish:
No crayfish noted.

Exotic Plants:
Canada Thistle
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cheumatopsyche Net-Spinning Caddisfly 61
Hydropsyche Net-Spinning Caddisfly 25
Tipula Crane Fly 8
Ceratopogonidae Biting Midge 5
Stenelmis Beetle 3
Orthocladius Non-Biting Midges 3
Polypedilum Non-Biting Midges 3
Lumbriculidae Worm 3
Conchapelopia Non-Biting Midges 2
Coenagrionidae Narrowwinged Damselfly 2
Chironominae Non-Biting Midge 1
Tubificidae Aquatic Worm 1
Orthocladiinae Midge 1
Cricotopus Non-Biting Midges 1
Dicrotendipes Non-Biting Midges 1
Tanypodinae Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Noctuidae Owlet Moth 1
Braconidae Parasitoid Wasp 1
Hemerodromia Tiny 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.