Analysis Report (2026 June 13

Survey Metadata
Data Collector:	Shep Torkelson
Survey Time Stamp (UTC):	2026 June 03 - 16:29
Starting Location:	44.943707, -92.885056
Ending Location:	44.942928, -92.884254
Distance	0.657 miles

Survey Statistics
Average Water Temperature:
Survey Area:	1.980 acres
Survey Volume:	3.451 acre ft
Percent of Waterbody Surveyed:	97.6%
Waterbody Area:	2.028 acres
Estimated Waterbody Volume?	3.535 acre ft

Survey Settings
Includes Edited Data:	No
Track Buffer:	25 m
BV Grid Cell Size:	5 m
BV Minimum Detection - Percent:	5.0%
BV Minimum Detection - Depth:	2.400 ft
BV Maximum Detection - Depth:	20.000 ft
BV Sonar Channel:	NA

Biovolume Summary

Type?	PAC?	Avg BVp?	SD BVp?	Avg BVw?	SD BVw?	Depth Range	Depth Avg	No. Depth Records
Point	0%	0%	± 0%	0%	± 0%	1.57 - 9.55 ft	2.500 ft	1025
Grid	0%	0%	± 0%	0%	± 0%	0.16 - 4.64 ft	1.743 ft	635

Bathymetric Contour Map	Vegetation Biovolume Heat Map

Hypsographic Summary

Hypsographic Chart

Depth	Area?	AreaP?	Volume?	VolumeC?	VolumeP?
0 - 1 ft	1.980 acres	100%	1.744 acre ft	3.451 acre ft	100%
1 - 2 ft	1.462 acres	73.8%	1.215 acre ft	1.707 acre ft	49.5%
2 - 3 ft	0.945 acres	47.7%	0.449 acre ft	0.491 acre ft	14.2%
3 - 4 ft	0.112 acres	5.7%	0.039 acre ft	0.042 acre ft	1.2%
4 ft +	0.011 acres	0.6%	0.003 acre ft	0.003 acre ft	0.1%

Biovolume Analysis by Quintiles

Type?	0 - 20%	20 - 40%	40 - 60%	60 - 80%	80 - 100%
Point	100%	0%	0%	0%	0%
Grid	0%	0%	0%	0%	0%

Biovolume Analysis by Depth

Type?	Depth	PAC?	Avg BVp?	SD BVp?	Avg BVw?	SD BVw?
Point	0 - 1 m	0%	0%	± 0%	0%	± 0%
	1 - 2 m	0%	0%	± 0%	0%	± 0%
	2 - 3 m	0%	0%	± 0%	0%	± 0%
	3 - 4 m	0%	0%	± 0%	0%	± 0%
	4 - 5 m	0%	0%	± 0%	0%	± 0%
	5 - 6 m	0%	0%	± 0%	0%	± 0%
	6 - 7 m	0%	0%	± 0%	0%	± 0%
	7 - 8 m	0%	0%	± 0%	0%	± 0%
	8 - 9 m	0%	0%	± 0%	0%	± 0%
	9 m +	0%	0%	± 0%	0%	± 0%
Grid	0 - 1 m	0%	0%	± 0%	0%	± 0%
	1 - 2 m	0%	0%	± 0%	0%	± 0%
	2 - 3 m	0%	0%	± 0%	0%	± 0%
	3 - 4 m	0%	0%	± 0%	0%	± 0%
	4 - 5 m	0%	0%	± 0%	0%	± 0%
	5 - 6 m	0%	0%	± 0%	0%	± 0%
	6 - 7 m	0%	0%	± 0%	0%	± 0%
	7 - 8 m	0%	0%	± 0%	0%	± 0%
	8 - 9 m	0%	0%	± 0%	0%	± 0%
	9 m +	0%	0%	± 0%	0%	± 0%

Offsets

Trip Name	Trip Date (UTC)	Manual Offset (ft)	Tide Station Name?	Avg Tide (ft)	Min Tide (ft)	Max Tide (ft)	Start Tide (ft)	End Tide (ft)
KarenDrPondWoodbur ...	2026 June 03 - 16:29	0.000	NA	NA	NA	NA	NA	NA
20260612 KarenDrPo ...	2026 June 12 - 17:48	0.000	NA	NA	NA	NA	NA	NA

Glossary

AOI: Area of Interest: Defines the transects or contiguous data samples as depicted by the colored trip line. Seperate areas of interest can be generated through merging of multiple trips, appending data to a single sonar log or lapses in time (greater than five minutes) within a sonar log.
Point: Individual Coordinate Point: A single point represents a summary of sonar pings and the derived bottom and canopy depths. Individual point data create an irregularily spaced dataset that may have overlaps and/or gaps in the data resulting in a increased potential for error.
Grid: Geostatistical Interpolated Grid: Interpolated and evenly spaced values representing kriged (smoothed) output of aggregated data points. The gridded data is most accurate summary of survey areas.
BVp: Biovolume (Plant): Refers to the percentage of the water column taken up by vegetation when vegetation exists. Areas that do not have any vegetation are not taken into consideration for this calculation.
BVw: Biovolume (All water): Refers to the average percentage of the water column taken up by vegetation regardless of whether vegetation exists. In areas where no vegetation exists, a zero value is entered into the calculation, thus reducing the overall biovolume of the entire area covered by the survey.
PAC: Percent Area Covered: Refers to the overall surface area that has vegetation growing.
Area: Area: Surface area of corresponding depth range and deeper.
AreaP: Area Percent: Percent of total surface area of the corresponding depth range and deeper.
Volume: Volume: Water volume of the corresponding depth range.
VolumeC: Volume Cumulative: Cumulative water volume of the corresponding depth range and deeper.
VolumeP: Volume Percent: Percent of total water volume of the corresponding depth range and deeper.
Type: Individual Coordinate Point: A single point represents a summary of sonar pings and the derived bottom and canopy depths. Individual point data create an irregularily spaced dataset that may have overlaps and/or gaps in the data resulting in a increased potential for error.

Geostatistical Interpolated Grid: Interpolated and evenly spaced values representing kriged (smoothed) output of aggregated data points. The gridded data is most accurate summary of individual survey areas.
Estimated Waterbody Volume: Estimated Waterbody Volume: The total lake volume estimation is based on this dataset only and will depend on total coverage and coverage depths of collected data.
Tide Station Name: Following deprecation and support of WTides, we upgraded our tide solution to Marea Tides that uses the global tide model Finite Element Solution (1 /16º grid; FES2014) to offset depths every minute to MLLW Datum.

Karen Drive Pond, Washington County Minnesota

Biovolume Summary

Hypsographic Summary

Biovolume Analysis by Quintiles

Biovolume Analysis by Depth

Offsets

Glossary