Where can I get detailed Bathymetry data for Ontario
@ Andre - thanks for the suggestion (+1). At a glance, it looks as though the data are specific to Lake Ontario & larger water bodies. I am awaiting a call from the Canadian Hydrographic Society (as we speak) and hoping they have the data readily available.
Detailed Bathymetric/Bathymetry contour data (0-200M)
Worldwide bathymetry data in .nc extension format can be obtained from here at the following resolution: The GEBCO One Minute Grid — a global one arc-minute grid Released: 2003, updated: 2008 — largely based on the most recent set of bathymetric contours contained within the GEBCO Digital Atlas. The GEBCO_08 Grid — a global 30 arc-second grid
Looking for bathymetry data for Lake Sakakawea in North Dakota
This solution would take a lot of work, but you could use historical USGS maps to get quite detailed "bathymetry" for Lake Sakakawea. Garrison Dam was only built in the 1950s, so topographic maps from surveys before the 1950s will have the depth below water level (before any fluvial erosion or deposition).
Interpolating bathymetric data to make a volume estimate
I have 3 m resolution bathymetric data of a lake that I want to use to make a volume estimate of a landslide deposit that is on the lake floor. Basically, I want to interpolate the bathy data to make a "pre landslide lake floor" surface in order to get a volume estimate of …
Hardware and software for capturing bathymetric lake elevations?
What hardware and software would you use for capturing bathymetric elevations (depth) in inland waterbodies (lakes and rivers)? Your device and software budget is $1,000. The budget is a soft tar...
bathymetry - Lake Victoria bathymetric data - Geographic …
Sep 2, 2016 · I am trying to find bathymetry for Lake Victoria (or portions thereof). Any GIS format and almost any resolution will do. As a last resort a hydrographic chart will suffice. Your Answer. Thanks for contributing an answer to Geographic Information Systems Stack Exchange! Asking for help, clarification, or responding to other answers.
Bathymetry of Quarry Lake in QGIS - Geographic Information …
Jul 15, 2012 · 1. There is almost global bathymetry coverage, but I doubt it is precise enough for your quarry. Check this similar question for both the source and a pointer to GRASS (which can be used from QGIS) and a conversion option: How to use SRTM30 Plus data with QGIS? If you measure enough points, you could create contours normally.
Bathymetry map (DEM) and the reservoir Volume from bathymetry …
Feb 22, 2017 · I have the bathymetry depth points. The first issue is how can I restrict the interpolation area to the shoreline areas? Because points are along the river valley which it divides into a fork at the end (T shape reservoir, attached photo), I can’t simply create a TIN surface without creating a boundary around the points.
Looking for interpolation tool to produce river bathymetry …
As per the title, I am looking for a tool that can produce bathymetry of a river from cross sections. Although people who may know such tools probably will not need any explanation why this kind of interpolation is a bit complicated, here are a few words of explanation for those which may know and use such things for other purposes.
qgis - How to extract contour lines from bathymetry profiles …
Oct 24, 2022 · I need to extract contour lines from surveyed bathymetry profiles. The profiles are .csv files with multiple points and X, Y and Z coordinates. There are cross sections and a single longitudinal section: Is it possible to "connect" the profiles with contour lines each 5m, ideally in Qgis ? Things I tried: