MBSS Site Summary for: LIGU-307-R-2017

Site Photos

Field photo showing stream conditions at site LIGU-307-R-2017-MidpointFacingDownstream (Opens in a new window) Field photo showing stream conditions at site LIGU-307-R-2017-MidpointFacingUpstream (Opens in a new window)

Located on Little Gunpowder Falls in the Little Gunpowder Falls watershed, 8-digit code: 02130804.
This stream was visited in the spring on 3/22/2017 and again in the summer on 8/2/2017.

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 Good - 4.7 / 5.0
Benthic IBI Good - 4.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 29,917 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 18.6 %
Agricultural Land Use 40.3 %
Forested Land Use 39.3 %


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

Physical Stream Habitat

Instream Habitat 16/20 (Optimal)
Epifaunal Substrate 13/20 (Suboptimal)
Velocity/Depth Diversity 12/20 (Suboptimal)
Pool Quality
Pool Extent = 25 meters
12/20 (Suboptimal)
Riffle Quality
Riffle Extent = 75 meters
18/20 (Optimal)
Shading 55 %
Embeddedness 40 %


Stream Water Quality:

pH (lab) 7.97
Alkalinity
(acid neutralizing capacity)
588.1 µeq/L
Dissolved organic carbon (DOC) 1.8064 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 18 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
River Chub 489
Common Shiner 176
Margined Madtom 128
American Eel 119
Northern Hogsucker 105
Cutlip Minnow 73
Longnose Dace 68
Tessellated Darter 48
White Sucker 34
Smallmouth Bass 31
Sea Lamprey 20
Creek Chub 13
Rosyface Shiner 7
Notropis Sp. 5
Rosyside Dace 5
Blacknose Dace 1
Redbreast Sunfish 1
Shield Darter 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:

American Bullfrog
Eastern Box Turtle
Eastern Snapping Turtle
Northern Green Frog
Pickerel Frog

Crayfish:

Orconectes limosus
Orconectes virilis

Exotic Plants:

Daylily(Common)
Japanese Barberry
Japanese Honeysuckle
Japanese Hops
Japanese Stiltgrass
Mile-A-Minute
Multiflora Rose
Oriental Bittersweet
Privet
Tree Of Heaven
 

Benthic Macroinvertebrates:

Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
CHEUMATOPSYCHE Net-Spinning Caddisfly 18
HYDROPSYCHE Net-Spinning Caddisfly 17
ORTHOCLADIUS Non-Biting Midges 9
MACCAFFERTIUM March Brown And Cahill Mayfly 8
ANTOCHA Crane Fly 6
TANYTARSUS Non-Biting Midges 6
ISONYCHIA Slate Drake Mayfly 6
EPHEMERELLA Sulphur Mayfly 5
POLYCENTROPUS Tube Maker Caddisfly 3
CLINOCERA Aquatic Dance Fly 3
NAIDIDAE Aquatic Worm 3
DIAMESA Bloodworm 3
PERLIDAE Common Stonefly 3
CORYNONEURA Non-Biting Midges 3
HEPTAGENIIDAE Flathead Mayfly 2
OECETIS Long-Horned Caddisfly 2
MICRASEMA 2
RHEOTANYTARSUS Non-Biting Midges 2
GOERA 1
PARATANYTARSUS Non-Biting Midges 1
RHEOCRICOTOPUS Non-Biting Midges 1
DUBIRAPHIA Riffle Beetle 1
MICROCYLLOEPUS Riffle Beetle 1
PROMORESIA Riffle Beetle 1
HEMERODROMIA Tiny Fly 1
PSYCHOMYIA Trumpet-Net Caddisfly 1
FERRISSIA Small Air-Breathing Freshwater Limpets 1
NEURECLIPSIS 1
STAGNICOLA Air Breathing Freshwater Snail 1
CORYDALUS Dobsonfly 1
CHIMARRA Fingernet Caddisfly 1
TRIAENODES Long-Horned Caddisfly 1
ORTHOCLADIINAE Midge 1
EUKIEFFERIELLA Non-Biting Midges 1
DIPLECTRONA 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.