Water chemistry volunteers measure phosphorus levels, chlorophyll-A concentrations (a measure of algae growth in the water), water clarity, and a temperature profile from the top to the bottom of the lake. This type of monitoring is done four times per year, and requires several hours of time during each monitoring event. Chemistry monitoring helps determine if nutrient pollution is occurring in a lake, or if seasonal fish die-offs may be a possibility due to low oxygen levels.
Wisconsin Citizen Lake Monitoring Training Manual (Chemistry Procedures)- full version, 8.5 MB (revised 2022)SWIMS Database User Guide (CLMN full version)SWIMS Database User Guide - How To Enter CLMN Data (CLMN abbreviated version)2024 Satellite Schedule
Wisconsin Citizen Lake Monitoring Training Manual (Chemistry Procedures)- full version, 8.5 MB (revised 2022)
SWIMS Database User Guide (CLMN full version)
SWIMS Database User Guide - How To Enter CLMN Data (CLMN abbreviated version)
2024 Satellite Schedule
Secchi and Chemistry monitoring form (3200-099)
Use this form to submit temperature and dissolved oxygen profiles along with Secchi depth.
For a list of ALL monitoring forms, click here (exit UWEX Lakes)
*NEW* Interpretive Guide to CLMN Annual Reports
Use this short guide to interpret the data that is included in your lake's annual reports.
How do I calibrate my dissolved oxygen meter or replace the sensor/membrane?
YSI has produced instructional videos on how to do these maintenance tasks with three of their popular dissolved oxygen meters. Click on any of the topics below to watch the videos.
YSI Pro20 meter - how to calibrate the meter
YSI Pro20 meter - how to replace the sensor
YSI 550A meter - how to calibrate the meter
YSI 550A meter - how to replace the membrane
YSI ProDSS meter - multiple maintenance videos
Dissolved Oxygen Calibration Log
Hach HQ30D Dissolved Oxygen Meter Instructions & Calibration Guide
YSI ProODO and ProSOLO Instructions & Calibration Guide