Effects of the change of land use in discharge patterns...

Effects of the change of land use in discharge

patterns using distributed hydrological

modelling in a tropical watershed

By: Luis Eduardo Peña Rojas ([email protected])

Félix Francés

Miguel Barrios

Universitat Politècnica de València, Spain

Universidad del Tolima, Colombia

Universidad de Ibagué, Colombia

Research Group of Hydrological and Environmental Modelling (GIMHA), Spain

http://lluvia.dihma.upv.es

The Third International Conference on Water, Energy and

Environment (ICWEE, 2015)

1

The Water Cycle and the watershedEffects of the change of land use in discharge patterns using distributed

hydrological modelling in a tropical watershed

Introduction

Watershed characteristics:

Simulation Scenarios

Results

Conclusions

Outline

2



Introduction

3



Increasing trends in global floods

4

Source: The OFDA CRED International Dissaster Database – www.emdat.be – Universae Catholique de Louvain, Brusseis - Belgium

http://www.emdat.be/



Floods in Colombia

5

Events Affected people

Destroyed + damaged housesDeaths for

floods

UNISDR: http://www.desinventar.net/index_www.html



Colombia 2010-2012

6



Colombia 2010-2012

7

http://www.google.com.pe/imgres?q=inundaciones+chia+colombia&um=1&hl=es&biw=1024&bih=509&tbm=isch&tbnid=myd6QezHwx7PvM:&imgrefurl=http://inundacionenlasabana.blogspot.com/2011/04/chia-tambien-fue-victima-de-las_25.html&docid=lcxpHRUeUyK77M&imgurl=http://4.bp.blogspot.com/-fRgZwoqR3AQ/TbXrk9X1PxI/AAAAAAAAAj4/lkx04wr1Yj4/s1600/ch%252525C3%252525ADa%25252B5.jpg&w=800&h=500&ei=FKmhUIjPBof1ygHL8YHABQ&zoom=1&iact=hc&vpx=110&vpy=163&dur=576&hovh=177&hovw=284&tx=223&ty=95&sig=100942321582918708354&page=1&tbnh=144&tbnw=223&start=0&ndsp=8&ved=1t:429,r:0,s:0,i:63



Combeima Watershed characteristics

8



Spatial variation in rainfall

9



TETIS Model

10

Y1

Y0

X0

X1

X2

X3

X4

X5

D1

D2

Y2

Y3

Y4 FLUJO BASE

Canal

INTERFLUJO

ESCORRENTÍA DIRECTA

EVAPOTRANSPIRACIÓN

Acuífero

Almacenamiento Gravitacional

PRECIPITACIÓN

LLUVIA

EXCEDENTE

FUSIÓN DE NIEVE

INFILTRACIÓN

PERCOLACIÓN

H0

T0

H1

T1

H2

T2

H3

T3

H4

T4

H5

T5

Almacenamiento Subsuperficial

Almacenamiento Estático

PÉRDIDAS SUBTERRÁNEAS

NEVADA

D3

D4

Nieves

HU

Y2 (ESCORRENTÍA

DIRECTA)

+ Y3 (INTERFLUJO)

Bussi (2010)



TETIS Model

11

Vélez (2001)



Digital Elevation Model

Static storage (Hu) Soil water content in the root zone

Saturated hydraulic conductivity vertical (Ks)

Saturated hydraulic conductivity horizoltal (Kss)

Saturated hydraulic conductivity through the rock layer

(Kp)

Land use/cober code

Groundwater flow (Kpa)

Series of precipitation, temperature, evapotranspiration

and flow

Input data

12



Input Maps

13

Elevation

(m.a.l.s.)Slope Ranges

(%)Slope

Ranges (%)Soils Type Infiltration

capacity

Geology Drainage Land

use/cover

Forest

Crops

Grassland

impervious

surfaces

Land use /

cover



Calibration / Validation Hydrological Model

14

Efficiency index Calibration Validation

Error volume (%) 3.45 3.87

NSE 0.52 0.46



Full Grassland / Land use

Full Forest / Land use

Current land use/cover

Simulation Scenarios

15



Results

16



Results

17



Results

18



Results

19



The hydrological distributed modeling is a powerful tool to

simulate changes in land uses / cover

Changes in land use affect the flood regime

Land uses with lower infiltration capacity increase peak

flows

Land uses with high infiltration capacity increase peak

flows

Conclusions

20



Acknowledgements

21

This research was funded partially by:



Thanks

22

Effects of the change of land use in discharge patterns...

Documents

Transcript of Effects of the change of land use in discharge patterns...