MBSS Site Summary for: SWAN-110-R-2000

Site Photos

Field photo showing stream conditions at site SWAN-110-R-2000-09_15 (Opens in a new window) Field photo showing stream conditions at site SWAN-110-R-2000-09_16 (Opens in a new window) Field photo showing stream conditions at site SWAN-110-R-2000-09_17 (Opens in a new window)

Located on BLENHEIM RUN in the Swan Creek watershed, 8-digit code: 02130706.
This stream was visited in the spring on 3/20/2000 and again in the summer on 6/27/2000.

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.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area 507 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 0 %
Agricultural Land Use 24.3 %
Forested Land Use 75.7 %


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

Physical Stream Habitat
Instream Habitat 14/20 (Suboptimal)
Epifaunal Substrate 18/20 (Optimal)
Velocity/Depth Diversity 7/20 (Marginal)
Pool Quality
Pool Extent = 30 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 70 meters 		7/20 (Marginal)
Shading 10 %
Embeddedness 25 %


Stream Water Quality:
Water temperature 21.9 ° C
Dissolved oxygen (DO) 8.1 mg/L
pH (lab) 7.44
Conductivity 140 µmho/cm
Alkalinity
(acid neutralizing capacity) 		392.8 µeq/L
Dissolved organic carbon (DOC) 2.1 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
Creek Chub 146
Tessellated Darter 132
Blacknose Dace 55
Rosyside Dace 13
American Eel 3
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Two-Lined Salamander
Pickerel Frog

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
Cricotopus/Orthocladius Midge 48
Cricotopus Non-Biting Midges 19
Prosimulium Black Fly 9
Clinocera Aquatic Dance Fly 7
Diamesa Bloodworm 5
Thienemanniella Non-Biting Midges 4
Tanytarsus Non-Biting Midges 3
Psephenus Water Penny 2
Perlodidae Perlodid Stonefly 2
Pisidiidae Pill Clam 2
Eukiefferiella Non-Biting Midges 2
Orthocladius Non-Biting Midges 2
Paratanytarsus Non-Biting Midges 2
Rheosmittia Non-Biting Midges 1
Sympotthastia Non-Biting Midges 1
Stenelmis Beetle 1
Acentrella Tiny Blue-Winged Olive Mayflies 1
Cheumatopsyche Net-Spinning Caddisfly 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.