MBSS Site Summary for: LMON-108-R-2003

Site Photos

Field photo showing stream conditions at site LMON-108-R-2003-1 (Opens in a new window) Field photo showing stream conditions at site LMON-108-R-2003-3 (Opens in a new window) Field photo showing stream conditions at site LMON-108-R-2003-2 (Opens in a new window) Field photo showing stream conditions at site LMON-108-R-2003-4 (Opens in a new window)

Located on WELDON CR in the Lower Monocacy River watershed, 8-digit code: 02140302.
This stream was visited in the spring on 4/2/2003 and again in the summer on 6/17/2003.

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 Fair - 3.3 / 5.0

Land Use

Land use can provide important information for determining stream health.
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Catchment area 487 acres A stream flowing through a densely forested area. An example of a forested stream.
Urban Land Use 3 %
Agricultural Land Use 39 %
Forested Land Use 58 %


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

Physical Stream Habitat
Instream Habitat 15/20 (Suboptimal)
Epifaunal Substrate 10/20 (Marginal)
Velocity/Depth Diversity 8/20 (Marginal)
Pool Quality
Pool Extent = 10 meters 		9/20 (Marginal)
Riffle Quality
Riffle Extent = 75 meters 		16/20 (Optimal)
Shading 95 %
Embeddedness 35 %


Stream Water Quality:
Water temperature 13.1 ° C
Dissolved oxygen (DO) 8.8 mg/L
pH (lab) 7.05
Conductivity 99 µmho/cm
Alkalinity
(acid neutralizing capacity) 		262.2 µeq/L
Dissolved organic carbon (DOC) 0.7 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 124
Blue Ridge Sculpin 24
Creek Chub 10
Fantail Darter 6
Potomac Sculpin 1
Biologists sampling fish communities.
Electrofishing to sample fish communities.

Amphibians and Reptiles:
Northern Green Frog
Northern Watersnake

Crayfish:
Cambaridae

Exotic Plants:
Japanese Honeysuckle
Mile-A-Minute
Multiflora Rose
 

Benthic Macroinvertebrates:
Sensitive taxa: Green, Tolerant: Red, Intermediate: Gold.
Genus/Family Common Name Count
Amphinemura Spring Stonefly 24
Oulimnius Riffle Beetle 13
Diamesa Bloodworm 7
Neophylax Caddisfly 6
Prosimulium Black Fly 6
Pseudolimnophila Crane Fly 6
Simulium Black Fly 5
Diplectrona Net-Spinning Caddisfly 5
Pycnopsyche Great Autumn Brown Sedge Caddisfly 4
Ephemerella Sulphur Mayfly 4
Lepidostoma Little Brown Sedge Caddisfly 4
Leuctridae Rolledwinged Stonefly 3
Thienemannimyia group Non-Biting Midges 2
Elmidae Riffle Beetle 2
Optioservus Riffle Beetle 2
Helichus Beetle 2
Orthocladius Non-Biting Midges 2
Parametriocnemus Non-Biting Midges 2
Tipula Crane Fly 2
Tipulidae Cranefly 2
Prostoma Freshwater Nemertean (Ribbon Worm) 1
Pisidium Freshwater Pea (Pill) Clam 1
Ptilostomis Giant Casemaker Caddisfly 1
Eurylophella Mayfly 1
Orthocladiinae Midge 1
Lype Net Tube Caddisfly 1
Cheumatopsyche Net-Spinning Caddisfly 1
Chelifera Aquatic Dance Fly 1
Naididae Aquatic Worm 1
Stylogomphus Clubtail Dragonfly 1
Hexatoma Crane Fly 1
Paraphaenocladius Non-Biting Midges 1
Polypedilum Non-Biting Midges 1
Tanytarsus Non-Biting Midges 1
Dicranota Hairy-Eyed Cranefly 1
Tabanidae Horse Fly 1
Brillia Non-Biting Midges 1
Natarsia Non-Biting Midges 1
Polycentropus Tube Maker 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.