NS Government Lake Survey Data

Map and Visualize

The Nova Scotia Lake Survey program is a partnership initiative between Nova Scotia Environment (NSE) and Nova Scotia Fisheries and Aquaculture (NSDFA) to inventory lakes throughout the province determining baseline water quality, in support of both sport fisheries and water resource management areas.

Version 2.0.0
Data Steward Email
Data Collection Organization Government of Nova Scotia, Fisheries and Aquaculture
Data Upload Organization Government of Nova Scotia, Environment and Climate Change
Progress Code onGoing
Maintenance Frequency Code unknown
Topic Category Code inlandWaters
Keywords Water quality, Nova Scotia, lakes, chemistry
Spatial Extent -66.144° 43.588°, -59.917° 46.869° (W S, E N)
Vertical Extent 1969-12-31 to 1970-01-01
Temporal Extent 1942-08-16 to 2018-09-10
Date Published
Alternate Formats FGP-HNAP ISO:19115-2 (XML) , W3C DCAT (XML) , W3C DCAT (JSON-LD)


Government of Nova Scotia, Fisheries and Aquaculture. 2022-04-30. "NS Government Lake Survey Data" (dataset). 2.0.0. DataStream.

Data Collection Information

Water quality samples are collected at approximately 10 different lakes per annum, generally during the summer and early fall months. Samples are typically collected from the surface (0 m), at 2x the Secchi disc depth (dependent on lake depth), thermocline (if present) and just above the lake bottom. The samples are submitted to the Nova Scotia Environmental Services Laboratory operated by the Nova Scotia Health Authority in Halifax, NS for analysis. Field parameters are measured using a multiparameter instrument with cable attached probe. The following are the monitored water quality parameters and applicable measurement units: field temperature (°C), field dissolved oxygen (mg/L), Secchi disc depth (m), select metals (µg/L), calcium (mg/L), magnesium (mg/L), hardness as CaCO3 (mg/L), lab conductivity (umho/cm), lab pH (-), lab turbidity (NTU), alkalinity as CaCO3 (mg/L), chloride (mg/L), colour (TCU), silica (mg/L), sulphate (mg/L), total nitrogen (mg/L), nitrate and nitrite as N (mg/L), ammonia as N (mg/L), orthophosphorus as P, (mg/L), total phosphorus (mg/L), total suspended solids (mg/L), total organic carbon (mg/L), chlorophyll a (mg/m3) and pheophytin (µg/L).

Bathymetric maps have been produced for most of the sampled lakes and the surface area measurement is included in the dataset.

Open Government Licence (OGL)

See disclaimer for details.

Data Disclaimer

The most recent data can be downloaded from the following link: This dataset is made available under the Open Government License – Nova Scotia Province of Nova Scotia makes no representations, express or implied, as to the accuracy, completeness and timeliness of the information, maps and other data provided through this application. The mapping is a graphical representation not based on survey and cannot be used for any legal or navigational purpose. Any conclusions drawn or decisions made, based on an interpretation of the data, are the sole responsibility of the user. By continuing to use the application, the user agrees to the terms of this disclaimer.

API Access

curl -G --data-urlencode "\\$filter=DOI eq '10.25976/r2b8-7966'" -H "x-api-key: PRIVATE-API-KEY"



DataStream system update: set citation to recommended default.


Initial Submission

Schema v1.7.0
Blockchain Transaction 0x333e4dadcf7095884eb9ffd4e5e77a40ea7b347f4e9619f5adebc34d4092f1bb
Blockchain Signed
Blockchain Verified
Digest SHA2-256:c8dde1ef37da7e398059bb9d0056916e66c7276889b8061e7b023c08f5206004
File size 9.01 MB