Observed arrival · 2026-10-15
SonarMapper turns sonar logs into depth maps
A desktop mapping program that converts echo-sounder recordings and point data into lake and river maps, measurements, and reports.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Anglers, fishing clubs, and water-response teams
- Worth noticing
- It reports measured-area coverage and distance to the nearest survey point, and flags suspicious readings instead of silently removing them.
Field notes
Users can define a shoreline from OpenStreetMap, draw it, or bring in a KMZ file, then combine multiple survey runs. The program says it keeps measurements in the project and includes them in reports; its listed exports include map tiles and GIS formats. Calculations run on the user's computer, while activation, background maps, and updates require internet access.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue