Macro-invertebrate Survey The chemical monitoring sites are upstream at the 495 culvert outfall and downstream at the last pool before Accotink Creek.                                 
        The biological monitoring site is 20 yards upstream from the Cross County Trail.                                            
    Wakefield Run Site ID: 09-PL30-Acc-ACC17                                                
    Back to main Monitoring Page Back to Wakefield Run Page                                              
Date 16-Sep-16 23-Oct-15 12-May-15 31-Oct-14 29-Sep-13 19-Aug-13 21-Jul-13 9-May-13 15-Apr-13                                          
Ecological condition 3 3 4 3 Chemical Monitoring Only Chemical Monitoring Only Chemical Monitoring Only 4 3                                          
Acceptable (7 - 12)  
Unacceptable (0-6)  
Macro-invertebrates
Click on underlined name for picture
Count Count Count Count       Count Count                                          
Total Macro-Invertebrate Count 206 239 231 201       207 178                                          
Worms     5         206 99                                          
Flat Worms                                                            
Leeches 15 9 9 9       1                                            
Crayfishes                                                            
Sowbugs                                                            
Scuds                                                            
Stoneflies                                                            
Mayflies   1   9                                                    
Dragonflies and Damselflies 85 136 1 3                                                    
Hellgrammites, Fishflies, and Alderflies                                                            
Netspinner Caddisfly 3 4   126                                                    
Most Caddisflies                 6                                          
Beetles                                                            
Midges 80 3 203           71                                          
Black Flies       2                                                    
Most True Flies 4 66 11 26         1                                          
Gilled Snails                                                            
Lunged Snails 13 20 2 26         1                                          
Clams                                                            
Other 5                                                          
Other Description Resembling stubby leeches?                                                          
Monitor Ted Welch Ted Welch Ted Welch Ted Welch       Elizabeth Kirchner Elizabeth Kirchner                                          
Number of Participants 7 8 2 2       2 2                                          
Time Start 15:30 15:30 11:30 10:30       10:30 10:30                                          
Time End 17:00 17:00 13:00 12:30       12:30 12:30                                          
Nr Nets 3 4 2 1       2 4                                          
Riffle Water Depth(in) 3 3 3 3       4 3                                          
Stream (water) width(ft) 4 6 6 8       3 3                                          
Channel (bank to bank) width(ft) 15 15 15 15       15 15                                          
Stream Flow Rate low low low med       med med                                          
Water Temp 71F 62F 74F 51F       62F 66F                                          
Air temp 78F 64F 86F 53F       72F 84F                                          
Fish Water Quality Indicators none scattered schools none none       Scattered schools Scattered schools                                          
Barriers to Fish Movement waterfalls > 1 ft waterfalls > 1 ft waterfalls > 1 ft waterfalls > 1 ft       none none                                          
Surface Water Appearance clear clear clear clear       clear clear                                          
Stream Bed Deposit brown brown brown brown       brown brown                                          
Odor none none none none       none none                                          
Stability of Stream (Bed sinks beneath feet in:) no spots no spots no spots no spots       no spots no spots                                          
Algae color brown-coated brown-coated brown-coated dark green       brown - coated brown - coated                                          
Algae percent 80%
everywhere
80%
everywhere
90%
everywhere
90%
everywhere
      80%
everywhere
80%
everywhere
                                         
Stream Channel Shade 1%-24% slight 1%-24% slight 1%-24% slight 1%-24% slight       >75% full >75% full                                          
Stream Bank Composition 10% trees
10% shrubs
50% grass
0% bare soil
30% rocks
10% trees
10% shrubs
50% grass
0% bare soil
30% rocks
10% trees
10% shrubs
50% grass
0% bare soil
30% rocks
10% trees
10% shrubs
50% grass
0% bare soil
30% rocks
      5% trees
10% shrubs
0% grass
70% bare soil
15% rocks
5% trees
10% shrubs
0% grass
70% bare soil
15% rocks
                                         
Stream Bank Erosion Potential 1%-24% slight 1%-24% slight 1%-24% slight 1%-24% slight       >75% severe >75% severe                                          
Riffle Composition 0% silt/mud
10% sand
40% gravel
40% cobbles
10% boulders
0% silt/mud
10% sand
40% gravel
40% cobbles
10% boulders
0% silt/mud
10% sand
40% gravel
40% cobbles
10% boulders
0% silt/mud
10% sand
40% gravel
40% cobbles
10% boulders
      0% silt/mud
15% sand
10% gravel
70% cobbles
5% boulders
0% silt/mud
15% sand
10% gravel
70% cobbles
5% boulders
                                         
Land Uses in Watershed __ Oil & gas
H Housing
M Forest
__ Logging
H Urban
__ Landfill
__ Construction
__ Mining
__ Cropland
__ Trash dump
__ Fields
__ Pasture
M Other (power line)
__ Oil & gas
H Housing
M Forest
__ Logging
H Urban
__ Landfill
__ Construction
__ Mining
__ Cropland
__ Trash dump
__ Fields
__ Pasture
M Other (power line)
__ Oil & gas
H Housing
M Forest
__ Logging
H Urban
__ Landfill
__ Construction
__ Mining
__ Cropland
__ Trash dump
__ Fields
__ Pasture
M Other (power line)
__ Oil & gas
H Housing
M Forest
__ Logging
H Urban
__ Landfill
__ Construction
__ Mining
__ Cropland
__ Trash dump
__ Fields
__ Pasture
M Other (power line)
      __ Oil & gas
H Housing
M Forest
__ Logging
H Urban
__ Landfill
__ Construction
__ Mining
__ Cropland
S Trash dump
__ Fields
__ Pasture
M Other (power line)
__ Oil & gas
H Housing
M Forest
__ Logging
H Urban
__ Landfill
__ Construction
__ Mining
__ Cropland
S Trash dump
__ Fields
__ Pasture
M Other (power line)
                                         
Amount & Type of Litter Moderate amounts of typical highway runoff litter Moderate amounts of typical highway runoff litter Moderate amounts of typical highway runoff litter Moderate amounts of typical highway runoff litter       Moderate amounts of typical highway runoff litter, plus some dumping of tires & debris Moderate amounts of typical highway runoff litter, plus some dumping of tires & debris                                          
Comments
This stretch of the stream underwent an extensive stream restoration project
--------------
Chemical tests,
October 23, 2015:
Upstream -
(above plunge pool)
Phosphate 2 ppm
Turbidity 80 JTU
Dissolved O
2 4 ppm
Nitrates 5ppm
pH 8
Coliform positive
Downstream -
(last pool above Accotink)
Phosphate n/a
Turbidity n/a
Dissolved O
2 n/a
Nitrates n/a
pH n/a
This stretch of the stream underwent an extensive stream restoration project
--------------
Chemical tests,
May 12, 2015:
Upstream -
(above plunge pool)
Phosphate 2 ppm
Turbidity 0.0
Dissolved O
2 4 ppm
Nitrates 2.5ppm
pH 8
Downstream -
(last pool above Accotink)
Phosphate 3 ppm
Turbidity 0.0
Dissolved O
2 6 ppm
Nitrates 2.5 ppm
pH 8
This stretch of the stream underwent an extensive stream restoration project
--------------
Chemical tests,
Oct. 31 2014:
Upstream -
(above plunge pool)
Phosphate 1.5 ppm
Turbidity 0.0
Dissolved O
2 7 ppm
Nitrates 4ppm
pH 7.5
Downstream -
(last pool above Accotink)
Phosphate 2 ppm
Turbidity 0.0
Dissolved O
2 8 ppm
Nitrates 4 ppm
pH 7.5

--------------
Chemical tests,
Sept 19 2013:
Upstream -
Phosphate 0.17 ppm
Turbidity 0.5mL / 5 JTU
Dissolved O2 12mg/l
Downstream -
Phosphate 0.11ppm
Turbidity 0.0
Dissolved O
2 9 mg/l

--------------
Chemical tests,
Aug 19 2013:
Upstream -
Phosphate 0.22ppm
Turbidity 0.0
Dissolved O2 10 mg/l
Downstream -
Phosphate 0.14 ppm
Turbidity 0.0
Dissolved O
2 7 mg/l

--------------
Chemical tests,
Jul 21 2013:
Upstream -
Phosphate n/a
Turbidity n/a
Dissolved n/a
Downstream -
Phosphate 0.32 ppm
Turbidity 0.0
Dissolved O2 7 mg/l

--------------
Chemical tests,
July 9 2013:
Upstream -
Phosphate 0.16 ppm
Turbidity 0.0
Dissolved O2 7 mg/l
Downstream -
Phosphate 0.21 ppm
Turbidity 0.0
Dissolved O
2 7 mg/l
Identification of the 6 caddisflies is questionable. They were very small; possibly midges.