Title
Classified Flood Hazard Zone
License
Public Domain (PD)
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Abstract

Data produced under hydrological forecasting strategy where National Directorate of Water Resource Management (DNGRH) is one of the main actors of the Disaster Risk Reduction system, whose fundamental and prime task is the monitoring, forecasting and issuing early warnings about the risks ahead, resulting in the safeguarding of lives and property.

Publication Date
Type
Vector Data
Keywords
GeoSAFE , Hazard
Category
geoscientificInformation
Regions
Africa , East Africa , Mozambique , Global
Owner
Group
INGC
More info
-
Restrictions
Users may apply HydroSHEDS for non-commercial purposes. We kindly ask users to cite HydroSHEDS in any published material produced using this data. Any modification of the original data by users must be noted. The authors of HydroSHEDS may request reprints of publications and copies of derived materials. The user shall not reproduce, convert, (re)publish, (re)distribute, (re)broadcast, (re)transmit, sell, rent, lease, sublicense, lend, assign, time-share, or transfer, in whole or in part, or provide unlicensed third parties access to the data and related materials without explicit written permission from the authors. For more details see HydroSHEDS Technical Documentation.
Purpose

Contingence planning preparation for disaster risk management

Language
English
Data Quality
Data were produced produced through the use of GSFM - Geospatial Stream Flow Model where analysis of topographic data for hydrologic modeling applications relies on the simple principle that water flows in the direction of steepest descent. Hence by comparing the elevation of given cell with that of the eight surrounding cells, it is possible to determine which direction incident drops of water would flow. Flow direction in GeoSFM is assigned using the eight direction pour point model in which each grid cell is assigned one of eight compass directions depending on which of its eight neighboring cells it discharges flow to. The computation of a flow direction grid paves the way for the determination of other parameters of hydrologic interest such as upstream contributing area, distance to the basin outlet and the slope of the land surface. It also allows for the definition of hydrologic modeling units such as catchments and river reaches. Routing parameters are extract for each of the resulting catchments and river reaches from the data derivatives of terrain analysis as well as the soil and land cover datasets.
Supplemental Information

For more information please refer to the HydroSHEDS Technical Documentation:
Lehner, B., Verdin, K., Jarvis, A. (2006): HydroSHEDS Technical Documentation. ...

Spatial Representation Type
vector data is used to represent geographic data
Attribute Name Label Description
geometry
GRIDCODE
Level
rio

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