MBSS Site Summary for: BA-P-427-107-96


Located on LONG GREEN CR UT1 in the Lower Gunpowder Falls watershed, 8-digit code: 02130802.
This stream was visited in the spring on 4/2/1996 and again in the summer on 6/25/1996.

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 Fair - 3.0 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 262 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 0 %
Agricultural Land Use 65.7 %
Forested Land Use 34 %


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 14/20 (Suboptimal)
Velocity/Depth Diversity 14/20 (Suboptimal)
Pool Quality
Pool Extent = meters 		13/20 (Suboptimal)
Riffle Quality 11/20 (Suboptimal)
Shading 85 %
Embeddedness 45 %


Stream Water Quality:
Water temperature 19.8 ° C
Dissolved oxygen (DO) 10.3 mg/L
pH (lab) 6.88
Conductivity 203 µmho/cm
Alkalinity
(acid neutralizing capacity) 		398.5 µeq/L
Dissolved organic carbon (DOC) 2.8 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
Blacknose Dace 6
American Eel 2
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Two-Lined Salamander

Crayfish:
Cambarus bartonii bartonii

Exotic Plants:
No exotic plants noted.
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Cricotopus/Orthocladius Midge 51
Ephemerella Sulphur Mayfly 14
Amphinemura Spring Stonefly 7
Prosimulium Black Fly 7
Diamesa Bloodworm 7
Diplectrona Net-Spinning Caddisfly 4
Hydropsyche Net-Spinning Caddisfly 2
Stygobromus Amphipod 1
Hemerodromia Tiny Fly 1
Ameletus Combmouthed Minnow Mayfly 1
Rhyacophila Free-Living Caddisfly 1
Epeorus Mayfly 1
Nigronia Megaloptera (Dark Fishfly) 1
Stegopterna Black Fly 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.