In the previous post I showed that the main reason for flooding in St Helena is its location in the low-lying terrain between the Caroni and Guayamare Rivers. This post will explore one option of flood mitigation in the area – levees. Levees have been used for centuries to protect areas against flooding. Portions ofContinue reading “St Helena Trinidad, Flood Mitigation Option #1: Levees!”
Tag Archives: Mapping
St Helena – Trinidad Floodplain Map
Let’s talk about floodplain maps. Floodplain maps have many uses, including guiding development and zoning, identifying the most vulnerable areas for emergency preparedness and response, analyzing property risk, and water resources management. Here is a hypothetical floodplain map of St Helena, Trinidad. If you have been following along with all of my mapping posts soContinue reading “St Helena – Trinidad Floodplain Map”
Maracas Watershed 3D Map – Take 2
I wanted to revisit the 3D map of the Maracas watershed I did a few weeks ago, but this time using the Shaded Relief symbology that I experimented with. This map uses the default hillshade parameters. It wasn’t necessary to accentuate the vertical features as this is a more localised area. This map shows theContinue reading “Maracas Watershed 3D Map – Take 2”
Hillshade Testing
When I was putting together the map showing the Topography of the Caroni River Basin, I go up to speed on 3 important parameters when generating a Hillshade: Z Factor, Azimuth, and Angle. Here is a quick comparison of these factors. The Z factor is used to exaggerate the vertical features of the terrain byContinue reading “Hillshade Testing”
Caroni Watershed Topography
A map showing the topography of the Caroni River Basin. Topography is the study of the land surface, which includes its physical features such as hills and valleys. This one isn’t too bad and I learnt a few things about hillshade which I will hopefully share in a future post. The purpose of this mapContinue reading “Caroni Watershed Topography”
Caroni River Basin Watersheds
A closer look at the watersheds within the Caroni River Basin This is just a zoomed in version of the full Watersheds map https://trinimapping.home.blog/2025/01/11/trinidad-watershed-map/. The full dataset can be viewed here: https://codepen.io/leelum1/full/yQbBBr. The purpose of this map is to show the Caroni River basin in greater detail, along with the main rivers in each watershed.Continue reading “Caroni River Basin Watersheds”
Trinidad Land Cover
A Land Cover map of Trinidad This dataset is sourced from: https://data.fs.usda.gov/geodata/rastergateway/caribbean/index.php. Obviously the major land cover is trees. I simplified the dataset as I didn’t think I need to post every single type of tree in the forest. The original dataset is pretty detailed, and free! (Which is no surprise as its from aContinue reading “Trinidad Land Cover”
Maracas Watershed 3D Map
Here is a different style of map that I don’t use very often. It is a 3D view of the Maracas Watershed, Trinidad. The purpose of this map is just to appreciate the topography of the watershed. Its interesting that the headwaters of the valley is pretty wide, then narrows moving downstream towards the CaroniContinue reading “Maracas Watershed 3D Map”
Trinidad Large Steelbands Map (North)
In honour of Carnival and Panorama season, here is a map of the Large Steelbands in Port-of-Spain. Special shout out to my old band – Silver Stars. I definitely miss the excitement of Carnival. The purpose of this map is to locate the bands to plan that perfect “panyard crawl” night. It is based onContinue reading “Trinidad Large Steelbands Map (North)”
Mapping T&T 