MBSS Site Summary for: OXON-101-R-2001

Site Photos

Field photo showing stream conditions at site OXON-101-R-2001-14 (Opens in a new window) Field photo showing stream conditions at site OXON-101-R-2001-15 (Opens in a new window) Field photo showing stream conditions at site OXON-101-R-2001-16 (Opens in a new window)

Located on OXON RUN in the Oxon Creek watershed, 8-digit code: 02140204.
This stream was visited in the spring on 3/20/2001 and again in the summer on 7/9/2001.

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 - 1.0 / 5.0
Benthic IBI Poor - 1.6 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 3,090 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 88 %
Agricultural Land Use 2 %
Forested Land Use 10 %


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

Physical Stream Habitat
Instream Habitat 17/20 (Optimal)
Epifaunal Substrate 16/20 (Optimal)
Velocity/Depth Diversity 10/20 (Marginal)
Pool Quality
Pool Extent = 35 meters 		10/20 (Marginal)
Riffle Quality
Riffle Extent = 50 meters 		15/20 (Suboptimal)
Shading 95 %
Embeddedness 50 %


Stream Water Quality:
Water temperature 21.8 ° C
Dissolved oxygen (DO) 8.3 mg/L
pH (lab) 7.52
Conductivity 190 µmho/cm
Alkalinity
(acid neutralizing capacity) 		832.9 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 3 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Blacknose Dace 36
Goldfish 1
Pumpkinseed 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Tubificidae Aquatic Worm 18
Cricotopus/Orthocladius Midge 17
Ablabesmyia Non-Biting Midge 14
Cricotopus Non-Biting Midges 9
Conchapelopia Non-Biting Midges 7
Gordiidae Horsehair Worm 7
Polypedilum Non-Biting Midges 6
Zavrelimyia Non-Biting Midges 3
Procladius Non-Biting Midge 3
Stictochironomus Non-Biting Midge 2
Cryptochironomus Non-Biting Midges 2
Hemerodromia Tiny Fly 2
Orthocladiinae Midge 2
Cheumatopsyche Net-Spinning Caddisfly 1
Cardiocladius Non-Biting Midge 1
Sublettea 1
Ceratopogon Biting Midge 1
Pyralidae Snout Moth 1
Paratanytarsus Non-Biting Midges 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.