El Salvador is located in the south-west coast of the Central American Isthmus on the Pacific Ocean. Limited to the north and east by Honduras. To the west by Guatemala. To the south by the Pacific Ocean, covering a 321 kilometers coastline, and the south-east by the Gulf of Fonseca which separates El Salvador from Nicaragua.

Country's area 20,742 Kms2 aprox.Total Inhabitants 6,122,515 Hab

San Salvador 1,477,766 HabSanta Ana 451,620 Hab Ahuachapan 260,563HabSan Miguel 380,442 Hab Usulutan 317.079Hab

Population Statistics

Most Important Cities

Political Division of El Political Division of El SalvadorSalvador

Normal Annual PrecipitationNormal Annual Precipitationin El Salvadorin El Salvador

Hydrological Gauging Stations andHydrological Gauging Stations andFlooding Areas in El SalvadorFlooding Areas in El Salvador

32 Meteorological Sta., 5 Telemetric72 Pluviometer30 Hydro Sta., 15 Telemetric

El Salvador in spite of being a small country, it is frequently affected by natural phenomena as hurricanes, droughts and earthquakes that add to the chain of natural and environmental events, that they have meant in terms of losses and damages, a constant wear of the efforts of development and growth that El Salvador has come realizing.

With the creation of the National Service of Territorial Studies it is tried to contribute to the prevention and reduction of the risk of disaster, for what it is of its competition the relative to the investigation and the studies of the phenomena, processes and dynamics of the nature, the environment and the society, that they have direct and indirect relation with the probability of occurrence of disasters and, therefore of losses and economic, social and environmental damages.

National Service of Territorial National Service of Territorial StudiesStudies

-Risk evaluation-Integration and reduction of risk

-Spreading and training

-Information-SpecializedStudies

-Information-Specialized

Studies

-Geology-Seismology-Vulcanology

MENR

GENERAL MANAGEMENT

CONSULTATIVE EXTERNAL GROUP

TECHNICAL COMMITTEEEXTERNAL ASSESSOR

TCCTCCTCCTCCGeological

ServiceHydrological

ServiceMeteorological

ServiceRisk Management

Service

• Computer Services Unit• Maintenance & Engineering Unit

Administrative Unit

Hydrometeorological Forecast Center

WQ

GW

SW

Agromet

OPC

Hydrological Forecast Center - CPHHydrological Forecast Center - CPH

Facilities and Equipment in the FCFacilities and Equipment in the FC

DDRGS

Field Data

CPH1 CPH6

CPH3

PCBase2™

CPH2

HydroBase™

CPH5

NWSRFS

CPH4

SHEF Data

SHEF

Forecast Products

ServerSwitch

Purpose of the Forecast CenterPurpose of the Forecast Center

• Early warning of serious flood conditions– Permits timely implementation of emergency

measures to prevent or mitigate damages• Advance knowledge of future hydro-meteorological

conditions (Long and Short Term Forecast)– Permits development of operation plans for the

most efficient usage of available water resources• Data base

– Provides basis for planning and design of future projects & for evaluating their economic & financial feasibility

Scheme of ProceduresScheme of Procedures

MONITORING&

SURVEILLANCE

PREWARNING

WARNING

ALERT

EMERGENCY

THRESHOLD 0 INTERNAL STAGES OF PROCEDURESIN CASE OF HYDROMET

PHENOMENA

NOTES:

Threshold: It refers to pre-set limits of stage on rivers

THRESHOLD 1

THRESHOLD 2

THRESHOLD 3

THRESHOLD 4

River Basins being MonitoringRiver Basins being Monitoring BACK

SENSORS

CPHNWSRFS

TRANSFER OF THE INFORMATION:SOCIAL NETWORK, INTERNET,TEL/FAX, RADIO, ETC.

Flow of Information from the StationsFlow of Information from the Stations

Configuration of the NWSRFSConfiguration of the NWSRFSLempa River BasinLempa River Basin

The catchment area of the Lempa river is about 18,246 square kilometers. For modeling purposes the river basin has been divided in 15 segments corresponding to each point of monitoring in real time. These points of monitoring include the four hydro power plants as well as hydrometric gauging stations.

GO

Long term ForecastLong term ForecastSome of Our Products with NWSRFSSome of Our Products with NWSRFS

Long term Forecast Cont…Long term Forecast Cont…

Short term ForecastShort term Forecast

Simulation Of Hurricane Mitch in Simulation Of Hurricane Mitch in 19981998

using NWSRFSusing NWSRFS

Thank you!Thank you!

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