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Aerial view of a forested Northwoods lake shoreline

Lake Atlas

Atlas Free and Atlas Paid.

Atlas Free is the public page that answers “what do we know about this lake?” Atlas Paid opens the full public record behind it, searchable across any lake, for people who need more than one page. Both show public-domain data only — neither ever shows a lake's private Lake Pulse data.

Side by side

What each level shows.

Free stays static HTML so search engines can find it, refreshed quarterly. Paid sits behind a login and is not indexed.

 Atlas FreeAtlas Paid
AccessAnyone, no accountLake Pulse account + Atlas Paid purchase
LakesOne page per lakeSearch and open any lake
Lake factsSize, location, HUC-8/12, historySame
Water quality valuesLatest value per key parameter, dated, sourcedEvery public value on record, full time series, with source, method, units, MDL/RL where given
Can we swim? / Can we eat the fish?Status line citing the sourceFull record: advisories, dates, agency documents
Bloom and bacteriaShows a public record existsDates, locations, and values from the public record
Impairment listingListed or not, with causeListing history, TMDL documents
Data inventoryCount by category and years covered (e.g., “Secchi: 14 years · Phosphorus: 3 reports · eDNA: none”)Same, each line clickable to the data
Invasive species, stocking, treatment permitsNot shownPublic records where they exist (USGS NAS, state stocking, aquatic plant permits)
Satellite bloom-duration historyNot shownSeason-by-season duration, where available
ExportNot shownCSV and PDF, every value cited
Saved lakes and update alertsNot shownSaved lists; email when a quarterly refresh adds data
SearchName and mapName, map, plus filters by state, county, HUC, acreage, data available. Results never sorted by quality

Pricing

Two ways to pay — or bundled in PRO.

Prices below are illustrative and may change before Atlas Paid opens.

Lake Unlock

$49 per lake

One lake's full public record, 12 months

Fits: Real estate buyers and agents, a consultant taking one call

Atlas Pass

$495/year

Up to 25 lake unlocks a year, saved lists, alerts, export

Fits: Consultants, lake management firms, appraisers, insurers

Included in PRO

In PRO fee

Atlas Pass bundled

Fits: Multi-lake managers

Who buys: consultants scoping a new lake; lake management companies checking pH, alkalinity, residence time, or protected species before a treatment; real estate buyers, sellers, and agents; insurers and lenders; researchers and students.

Distinct from LotCheck. Atlas Paid is the lake's public record. LotCheck is a confidential, parcel-level satellite and aerial report for one lot. Atlas Paid can link to LotCheck for anyone buying on the lake.

The rules

What doesn't change, Free or Paid.

  • Public-domain data only. A lake's private Lake Pulse data never appears in Atlas, Free or Paid.
  • Never rank, score, or compare lakes. Paid search filters and sorts by name, distance, or acreage, never by condition.
  • Every value is dated and sourced. Old data shown with its date beats no data.
  • State agencies, universities, and federal sources are credited on every page.
  • Atlas Free stays static, with no live data. Atlas Paid is a logged-in view and can be dynamic.
  • Atlas is not the lake's portal. Paid pages carry the same “public record, not this lake's Lake Pulse portal” line as Free.

Lake Atlas is a compilation of public records. It is not an inspection, a disclosure, or a safety determination. Always follow current local agency advisories before swimming or eating fish.

Best place to start

Download the Lake Pulse app

The fastest way in: find your lake, see what's already known about it, and decide what to monitor next — free, in about two minutes.

  • See activity and status of the lake you care about

    Your dock, your cove, your landing — know what's happening in the part of the lake you actually use.

  • Receive alerts

    Get notified about conditions, closures, projects, and activity from your lake and your neighbors.

  • Contribute with higher tiers of paid subscription

    Add field notes, photos, and measurements. Higher tiers unlock tools that turn your observations into shared data.

Prefer a big screen? Find your lake on the web

Person on a dock holding a phone with the Lake Pulse app
A woman paddling a kayak alone across a misty morning lake

Lake Pulse

Every lake deserves a permanent record. Yours can start this morning.

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