MBSS Site Summary for: PTOB-109-X-2005


Located on Port Tobacco Creek UT2 UT1 in the Port Tobacco River watershed, 8-digit code: 02140109.
This stream was visited in the spring on 7/20/2005 and again in the summer on 7/20/2005.

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 N R
Benthic IBI N R

Land Use

Land use can provide important information for determining stream health.
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Catchment area 992 acres A highly channelized urban stream with concrete banks. An example of a highly channelized urban stream.
Urban Land Use 38 %
Agricultural Land Use 22 %
Forested Land Use 41 %


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

Physical Stream Habitat
Instream Habitat 12/20 (Suboptimal)
Epifaunal Substrate 13/20 (Suboptimal)
Velocity/Depth Diversity 11/20 (Suboptimal)
Pool Quality
Pool Extent = 41 meters 		13/20 (Suboptimal)
Riffle Quality
Riffle Extent = 39 meters 		10/20 (Marginal)
Shading 92 %
Embeddedness 40 %


Stream Water Quality:
Water temperature 23.6 ° C
Dissolved oxygen (DO) 6.8 mg/L
Conductivity 239 µmho/cm

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:
Fish data is unavailable or no fish observed.

Amphibians and Reptiles:
Northern Green Frog

Crayfish:
No crayfish noted.

Exotic Plants:
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Benthic data unavailable.
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.