MBSS Site Summary for: LOGU-101-R-2007

Site Photos

Field photo showing stream conditions at site LOGU-101-R-2007-1 (Opens in a new window) Field photo showing stream conditions at site LOGU-101-R-2007-2 (Opens in a new window)

Located on Long Green Creek in the Lower Gunpowder Falls watershed, 8-digit code: 02130802.
This stream was visited in the spring on 3/20/2007 and again in the summer on 7/5/2007.

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 Good - 4.7 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 253 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 13.3 %
Agricultural Land Use 74.3 %
Forested Land Use 11.6 %


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

Physical Stream Habitat
Instream Habitat 13/20 (Suboptimal)
Epifaunal Substrate 15/20 (Suboptimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = 32 meters 		11/20 (Suboptimal)
Riffle Quality
Riffle Extent = 47 meters 		12/20 (Suboptimal)
Shading 95 %
Embeddedness 25 %


Stream Water Quality:
Water temperature 16.4 ° C
Dissolved oxygen (DO) 9 mg/L
pH (lab) 6.53
Conductivity 238 µmho/cm
Alkalinity
(acid neutralizing capacity) 		272.3 µeq/L
Dissolved organic carbon (DOC) 0.4913 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 61
Creek Chub 7
Tessellated Darter 5
American Eel 3
Rosyside Dace 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Eastern American Toad
Eastern Red-Backed Salamander
Fowler's Toad
Northern Green Frog
Northern Two-Lined Salamander
Wood Frog

Crayfish:
Cambarus bartonii bartonii

Exotic Plants:
Garlic Mustard
Japanese Honeysuckle
Japanese Stiltgrass
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Ephemerella Sulphur Mayfly 17
Amphinemura Spring Stonefly 11
Orthocladius Non-Biting Midges 11
Dolophilodes Medium Evening Sedge Caddisfly 10
Baetis Blue-Winged Olive Mayfly 10
Diplectrona Net-Spinning Caddisfly 6
Sympotthastia Non-Biting Midges 6
Stegopterna Black Fly 5
Baetidae Small Minnow Mayfly 5
Stenonema Flatheaded Mayfly 5
Prosimulium Black Fly 4
Simulium Black Fly 3
Cheumatopsyche Net-Spinning Caddisfly 2
Thienemannimyia group Non-Biting Midges 2
Trissopelopia Non-Biting Midges 1
Oulimnius Riffle Beetle 1
Acentrella Tiny Blue-Winged Olive Mayflies 1
Parametriocnemus Non-Biting Midges 1
Paratanytarsus Non-Biting Midges 1
Cricotopus Non-Biting Midges 1
Eukiefferiella Non-Biting Midges 1
Micropsectra Non-Biting Midges 1
Enchytraeidae Aquatic Worm 1
Naididae Aquatic Worm 1
Rhyacophila Free-Living Caddisfly 1
Antocha Crane Fly 1
Tipula Crane 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.