Hydrological Modeling

Water issues continue to expand and become more complicated for planning and development projects. Surnorte has positioned itself as a genuine consultation and highly specialized knowledge in geomatics and environmental planning. All this scientific and technical knowledge is supported by the latest environmental technologies, especially from hydrological modelling (Wet Area Mapping, WAM) and water management.

WET AREA MAPPING (WAM) Developed by Forest Watershed Research Center: 

 

Since 2014 Surnorte has been working with the Forest Watershed Research Center of the University of New Brunswick. It explicitly promotes and supports further wet/dry areas mapping research and testing new mapping applications of Wet Area Mapping (WAM).

Water issues continue to expand and become more complicated for planning and development projects. Surnorte will use our existing strengths and experience that can be applied to provide specialized support in Chile and Canada.

We apply highly specialized knowledge and expertise in the areas of geomatics and environmental planning. All this scientific and technical knowledge is supported by the latest environmental technologies, especially from hydrological modelling and water management.

Some of the user-friendly ArcMap tools that will allow GIS specialists and resources planners to take advantage of the newly developed datalayers:

 

The WAM products (Trial, Locate, Flood, Spill and Monitor) are, first and foremost, an indicator of hydrological risk. Output predicts soil conditions when soils are at or near field capacity. In other words, the mapping products indicate field conditions during the wetter months when considerations of hydrological risk are more relevant.

trial-display-3

 

In detail, the WAM process performs meter-by-meter determinations of seasonal and changes in water flow channel networks, wet and dry areas, at the surface and subsurface level. In this, WAM generates the metric cartographic depth-to-water (DTW)) from Digital Terrain Models (DTMs). This index can also be used to locate the extent of the areas prone to flood, either due to high precipitation and snowmelt amounts, the introduction of flow blockages (ice jams, beaver dams, collapsed or otherwise blocked culverts). It also allows for water discharge determination at any point of concern along inland waterways, based on automated upslope water accumulation area calculations per actual or anticipated mm-per-day storm events.

 

While WAM does not provide technical information as needed to follow specific engineering protocols, it provides easy-to-visualize information as to where and how – in principle – each land-based asset needs to be managed and protected against particular water-related risks. In this capacity, WAM-generated data layers, tools, and maps have been welcomed as must-have information sources for local to regional planning purposes, from operational to strategic perspectives. Examples refer to operations layout in forest operations (harvest blocks, access trails, silvicultural planning), evaluation of existing transport routes, planning new routes, learning how to contain spills, assessing specific habitat distributions across the land, etc.

The image displays the crossing of water flow and roads under a scenario of 56 mm/day. This scenario could also apply to pipelines, trails, tracks, poles, etc. The objective of this project was to optimize and evaluate linear transportation routes and related extreme rainfall scenarios.