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Manatee Springs Run 2: Main line to Fissure and Sewer Tunnels

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Owners:		This resource does not have an owner who is an active HydroShare user. Contact CUAHSI (help@cuahsi.org) for information on this resource.
Type:	Resource
Storage:	The size of this resource is 20.4 MB
Created:	Dec 05, 2025 at 6:27 p.m. (UTC)
Last updated:	Dec 05, 2025 at 7:03 p.m. (UTC)
Citation:	See how to cite this resource

Sharing Status:	Public
Views:	31
Downloads:	0
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Abstract

On 8/23/2025, KUR divers Lea Johnson and Sterling McMahon completed a 200-minute dive into the cave system at Manatee Springs State Park, Levy County, FL, USA. Penetrating 5000 feet into the cave, divers recorded water temperature, pH, specific conductivity, and dissolved oxygen in real time using a YSI EXO3 datasonde, as well as collecting water samples from predetermined locations along the route for lab analysis of nitrate and others. Grab samples (500ml Nalgene bottles) were taken upstream of Sue Sink on the main line (#7, 13 minutes)), between the Milk Tunnel and the Blue Water Tunnel on the main line (#8,33 minutes ), downstream of the Fissure (#9, 72 minutes), and inside of the Sewer Tunnel (#2, 124 minutes). Sample numbers correspond to markers placed on the dive guideline and noted on the resource map, dive time given to synchronize with the real-time datasonde data.

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Coverage

Spatial

Coordinate System/Geographic Projection:

WGS 84 EPSG:4326

Coordinate Units:

Decimal degrees

Place/Area Name:

Manatee Springs State Park

Longitude

-82.9652°

Latitude

29.5197°

Temporal

Start Date:
End Date:

Content

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Readme.txt

Readme.txt

manatee_run02_8-23-25_narrative.txt is the dive teams description of the dive.

Manatee_run02_wetnote.png is a photo or screenshot of the divers underwater notebook detailing the timing of when certain karst features or directional decisions were made. This is to assist in the interpretation of real-time data from the YSI EXO3 datasonde carried by the dive time. 

manatee_run02_8-23-25_rawdata.xlsx is the dataset as downloaded from the YSI EXO3 datasonde. This contains real-time temperature, pH, specific conductivity, and dissolved oxygen readings.

manatee_run02_8-23-25.xlsx contains processed and graphed data from the associated raw data file.

Manatee_run02_surfacephoto.JPG Photo of dive entry/exit point on 7-20-25

Manatee_map_sampling_points.JPG Photo of the locations of the sampling points on the map of the cave system

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Related Resources

This resource belongs to the following collections:

Title	Owners	Sharing Status	My Permission
Manatee Springs Project	Andrew Johnston	Public & Shareable	Open Access

How to Cite

Johnston, A. (2025). Manatee Springs Run 2: Main line to Fissure and Sewer Tunnels, HydroShare, http://www.hydroshare.org/resource/d76b7d9640964d8fad9d466f24bbdb70

This resource is shared under the Creative Commons Attribution CC BY.

http://creativecommons.org/licenses/by/4.0/

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