MIKE 11 GIS for ArcMap
One of the new products being released with version 2007 is MIKE 11 GIS which is an extension to ArcMap. As such it provides features adding to the features available in the basic ArcMap software. The features in MIKE 11 GIS aims at providing the user with tools efficiently utilizing GIS data for MIKE 11 or MIKE Flood modelling purposes. Typically, MIKE 11 GIS is used for preparing catchment, river and cross section data for subsequent use within the standard user interface of MIKE 11. Secondly, MIKE 11 GIS allows for visualising and analysing MIKE 11 simulation results such as time series and flood maps.
MIKE 11 GIS shows up in ArcMap as a separate menu and toolbar
providing access to the various features. The following figure
shows the MIKE 11 GIS menu and toolbar and some of the data types
which can be managed and edited within MIKE 11 GIS:
The features provided with MIKE 11 GIS include the following:
Digital Elevation Model
- Load DEM from various sources.
- Generate DEM based on X/Y/Z point data.
- Process and correct DEM for subsequent automated river and
catchment delineation.
- Save DEM as .dfs2 file for use in MIKE 11 and MIKE Flood.
Branches:
- Digitize river branches and embankment lines on top of DEM.
- Use existing GIS data sets as river branches or embankment
lines.
- Automatically generate river branches based on DEM slopes.
- Save network as .nwk11 file for use in MIKE 11.
Cross sections:
- Digitize cross section lines and extract cross section data
from DEM
- Automatically generate cross section lines at equidistant
distance along river branches.
- Generate cross sections based on X/Y/Z data points typically
from river survey.
- Import cross sections data (for instance originating from river
survey) and extend cross section onto flood plain while still
keeping the original surveyed data and extracting cross section
data from the DEM in the extended part.
- Save cross sections as .xns11 file for use in MIKE 11.
Hydraulic Structures
- Digitize or define the location of hydraulic structure such as
weirs, culverts, bridges, dams and control structures.
Catchments
- Digitize catchments on top of DEM.
- Automatically generate catchments based on DEM slopes.
- Edit NAM parameters for catchments.
Time Series Data
Time series analysis and presentation in MIKE 11 GIS is done
using the extension Temporal Analyst (TA) which is also developed
by DHI. TA is designed for managing, viewing, querying, analyzing
and editing time-series data from within ArcMap. The time-series
data may exist in a variety of formats including an MIKE 11
result files, ESRI geodatabase or other external databases, and
TA brings all of these data formats together into a single
environment. Once the time-series data is in the environment of
the Temporal Analyst it can be plotted together and further
analyzed regardless of their data format. The Temporal Analyst
provides some sophisticated temporal analysis plus temporal and
spatial analysis.
Flood Maps
While running a simulation, MIKE 11 produces maps (as .dfs2
files) showing for instance the depth and extent of the flooding.
Subsequently the generated maps can be loaded into ArcMap as
grid/raster data as if they were regular grid data in ArcMap,
i.e. converting from .dfs2 format to ArcMap format is not
required. Flood maps may be generated as maps showing the maximum
flooding or as files with maps corresponding to the flooding at
for instance hourly intervals. In the latter case the flood maps
can be shown as an animation which is shown within MIKE 11 GIS or
saved and .avi file for subsequent display outside ArcMap.
More information to follow in the comming newsletters. Until then please contact Morten Rungø at mor@dhigroup.com for further information.
