MBSS Site Summary for: LANG-120-R-2023

Site Photos

Field photo showing stream conditions at site LANG-120-R-2023-MidpointLookingDownstream (Opens in a new window) Field photo showing stream conditions at site LANG-120-R-2023-MidpointLookingUpstream (Opens in a new window)

Located on FLANNELS BRANCH in the Langford Creek watershed, 8-digit code: 02130506.
This stream was visited in the spring on 4/3/2023 and again in the summer on 6/6/2023.

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 Fair - 3.3 / 5.0
Benthic IBI Poor - 2.1 / 5.0

Land Use

Land use can provide important information for determining stream health.
(Hint: Screen readers will announce definitions; mouse users can hover over dotted text.)
Catchment area No data available 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 4.8 %
Agricultural Land Use 92.8 %
Forested Land Use 1.4 %


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

Physical Stream Habitat
Instream Habitat 9/20 (Marginal)
Epifaunal Substrate 10/20 (Marginal)
Velocity/Depth Diversity 4/20 (Poor)
Pool Quality
Pool Extent = 65 meters 		8/20 (Marginal)
Riffle Quality
Riffle Extent = 10 meters 		8/20 (Marginal)
Shading 70 %
Embeddedness 20 %


Stream Water Quality:
Water temperature 16.9 ° C
Dissolved oxygen (DO) 6.04 mg/L
pH (lab) 6.2
Alkalinity
(acid neutralizing capacity) 		210.3 µeq/L
Dissolved organic carbon (DOC) 4.144 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 6 fish species were collected.
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Common name Count
Pumpkinseed 65
Tessellated Darter 50
Bluegill 39
Eastern Mosquitofish 13
Eastern Mudminnow 12
American Eel 4
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
American Bullfrog
Common Five-Lined Skink
Eastern Painted Turtle
Northern Green Frog
Northern Two-Lined Salamander

Crayfish:
Lacunicambarus diogenes
Procambarus acutus / zonangulus

Exotic Plants:
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
PARAMETRIOCNEMUS Non-Biting Midges 51
ORTHOCLADIUS Non-Biting Midges 18
THIENEMANNIMYIA GROUP Non-Biting Midges 6
SIMULIUM Black Fly 5
CERATOPOGON/CULICOIDES/STILOBEZZIA 4
SYNURELLA Amphipod 4
FRENESIA 3
TVETENIA Non-Biting Midges 3
POLYPEDILUM Non-Biting Midges 3
CORYNONEURA Non-Biting Midges 2
TRIBELOS Non-Biting Midges 2
NAIDIDAE Aquatic Worm 2
STENELMIS Beetle 2
CHEUMATOPSYCHE Net-Spinning Caddisfly 2
CHIRONOMIDAE Non-Biting Midge 1
CONCHAPELOPIA Non-Biting Midges 1
PARATENDIPES European Non-Biting Midge 1
ORTHOCLADIINAE Midge 1
IRONOQUIA Northern Caddisfly 1
LUMBRICULIDAE Worm 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.