surface water modeling for wady quena (1)
TRANSCRIPT
By
Ahmad Wagdy, Ph.D.
Assc. Prof. of Hydraulics, Cairo UniversityProject Director, UNDP
WWF 4March 18, 2006
Mexico City, Mexico
Groundwater Resources Assessment, Monitoring and Evaluation Using Advanced Technical Tools
The Eastern Desert Project - EDP
Groundwater Management in Middle East & North Africa Region (WB, AWC)
Cairo University
FT2.25 LA1166
Presentation Outlines• Description of Local Action
– EDP Objectives– Partners– Regional Extent
• Project Work Plan and Acheivements• Advance Technical Tools• Prospects for the Future
Brief Description of EDP• A Targeted-Research Project• Develop a replicable model for integrating
groundwater resources of wady systems of arid regions into national water budget
• Funded by GEF through UNDP• Total GEF contribution of $ 830,000• In-kind local contribution of $ 590,000• Executing Agency : Cairo University
Wady Systems in Hyper Arid Environment
Flash Floods; 1994 Event
Damages Following 1994 Flash Flood
Objectives• Develop a replicable integrated model
(methodology) for evaluating the extent and development potential of ground water resources in arid lands, with the Eastern Desert of Egypt as a pilot site.
• The model will be replicable for similar arid areas; Oman, North of Sudan, Tibesty, Yemen, and Saudi Arabia.
• Introducing new techniques and procedures to address arid region hydrology.
• Integrating research with development as per prevailing conditions and constrains.
• Building national capacities and providing a pool of experts capable of conducting proper groundwater management.
Partners• Irrigation & Hydraulics Department, Faculty of
Engineering, Cairo University (IHD-CU)• Center for Environmental Hazards Mitigation,
Cairo University (CEHM)• National Water Research Center (NWRC)• Groundwater Sector, Ministry of Water
Resources and Irrigation (GWS-MWRI)• Western Michigan University, International
Consultant (IC)
Regional Extent and Features• Water Divide at Red sea
mountains• Wadies flowing to sea, Wadies
flowing to Nile • Geology reveals 4 layers:
Quaternary, Carbonate [Tertiary, UC] Nubian Sand Stone, Precambrian
Project Flow ChartInception Report
PWB
Inputs Field Work Processed Layers
Geology
Topography
Hydrology
Geochemistry
Infiltration Capacity
RainfallRunoff
IsotopicComposition
DEM
WadyDeliation
Design Storms
AquiferExtent
Meteorology
Soil
Landuse
DevelopmentPlans
Ground proofing
Well DrillingPumping
Tests
Geophysics
Analysis
PrecipitationAnalysis
Surface WaterModelling
RechargeEstimation
Groundwater Modelling
DevelopmentPotential
EIA
GroundwaterSource &age
Plan of Work and
Major Achievements
Review Tasks
1. Full package of Review materialconcerning the Eastern Desert
• Geology• Hydrology• Geochemistry• Geophysics• Soil and land use, and• Previous modeling attempts concerning
surface and groundwater
Information Layers; Geology
2. Full set of GeoreferencedConoco Geologic Maps 1:500,000
3. Complete coverage of GeoreferencedLandsat TMscenes
Satellite Coverage
4. Complete coverage of ASTER Scenes L1A and L1B
Satellite Coverage, cont.
5. SRTM (radar)coverage of the Eastern Desert at 1km horizontal resolution
Satellite Coverage, cont.
6. Band reflectance Mosaic of Landsat TMover Eastern Desert
Satellite Coverage, cont.
7. Mosaic of Geologic Mapscovering the Eastern Desert
Mosaic of TM Band Ratio Images 5/4, 5/1, 5/7 (Lithology: Blue, Green, Red:)
Satellite Coverage, cont.
8. Digital Elevation Terrain Data (DEM)for the entire Eastern Desert, 60m resolution
Digital Elevation Model
Rainfall Analysis
• Meteorological approach.• Statistical approach.• RS-derived precipitation• Classification of storm.• Precipitation patterns.• Design storms.
Longitude of stations
Latit
ude
of s
tatio
ns
ABU SIMBEL
ASWAN
ASYUT
CAIRO
EL TOR
EL-SUEZ
HURGHADA
ISMAILIA
KENA KOSSEIRLUXOR
MINYA
SOHAG
RAS-BINAS
30 31 32 33 34 35 3622
23
24
25
26
27
28
29
30
31
32
9. Complete record for Rainfall, and other meteorological parameters during the last 50 years
Rainfall Analysis; Cont.
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32°
32°
34°
34°
36°
36°
24° 24°
26° 26°
28° 28°
30° 30°
±Annual average precipitation
1 - 2
3 - 5
6 - 10
11 - 15
16 - 20
21 - 30
31 - 40
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32°
32°
34°
34°
36°
36°
24° 24°
26° 26°
28° 28°
30° 30°
±
0.0 - 2.0
2.1 - 5.0
5.1 - 10.0
10.1 - 15.0
15.1 - 21.0
21.1 - 28.0
28.1 - 35.0
Annual rainfall values (mm) for which 50% of annual record values are less
than or equal
Precipitation Time Series
0.00.51.01.52.02.53.03.54.04.55.0
1965 1970 1975 1980 1985 1990 1995 2000 2005
Year
Pre
cipi
tatio
n vo
lum
e (B
CM
)
0.0
5.0
10.0
15.0
20.0
Pre
cipi
tatio
n de
pth
(mm
)
Time series of annual rainfall over the ED over the period 1968 to 2002
Different Sets of RS Data10. Set of new TRMM data(0.25°), Set of
SSMI data, Set of global 1° ppt. data (Nicholson)
30°45'
30°45'
32°0'
32°0'
33°15'
33°15'
34°30'
34°30'
35°45'
35°45'
22°15'22°30'
23°0'23°15'
23°45'24°0'
24°30'24°45'
25°15'25°30'
26°0'26°15'
26°45'27°0'
27°30'27°45'
28°15'28°30'
29°0'29°15'
29°45'30°0' ±
The precipitation 0.25°x0.25° grid covering the ED and the surrounding areas
32°
32°
34°
34°
36°
36°
24° 24°
26° 26°
28° 28°
30° 30°
0 - 5
6 - 10
11 - 20
21 - 30
31 - 40
41 - 60
61 - 100
101 - 160
161 - 220
221 - 280
±
Annual precipitation (mm) over the ED for 2001(TRMM 3B43 v6 dataset)
Satellite-Driven Precipitation
SSM/I TRMM
11. SWAT analysis (we can run model for over 20 years).
SWAT Analysis
Estimation of Recharge
12. Infiltration Testing Program for selected locations in six wadies
• Modeling (WMS, HYDRUS, Physical).
Field Assessment and Monitoring Program13. Well Inventory
for the Eastern Desert.
Age & Origin of Groundwater• Determine the renewability potential for
the groundwater.• Geochemical and Isotope analysis for
groundwater:– Stable isotope ratios of H and O in H2O
– Stable isotope ratios of dissolved Cl
– Tritium and 36Cl – natural radioactive tracers
– Solute ion concentrations (Na, Cl, etc.)
• Chloride content soil analysis.• Regional visualization for the entire ED.
14. Groundwatersampling Program; Ten wadies are sampled, through 5 field trips, for geochemical / isotopic analysis
Geo-Chemical & Isotopic Analysis
Geo-Chemical & Isotopic Analysis, cont.
15. Renewabilitypotential for sampled aquifers using Geochemical and isotopic analysis -120
-60
0
60
-12 -6 0 6
δ18O
δD
meteoric water line
Nile river
Eastern Desert groundwater
Sidi Barrani rain
Western Desert Nubian aquifer paleowater
Wadi Tarfa groundwater
Gulf of Suez paleowaters
Stable isotope ratios of hydrogen (δD) vs. oxygen (δ18O). Samples from Eastern Desert (this study) are shown as filled circles. Hollow symbols are data from other studies cited in text
Plan of Work:Surface Water Modeling
Construct a recharge / runoff modelAdjusted SCS MethodApply to all major Wadies (7)
1. GIS (co-registered data)2. Watershed delineation3. Precipitation4. Initial losses5. Runoff hydrographs & channel routing6. Transmission losses
Groundwater recharge / Select wadies with best GW development potential
Major Achievements
16. Surface Water Modeling– Wady Quena: two different approaches– Wady Sannour– Wady Abbad– Wady El-Qarn (Mattuly)– Wady Allaqui– Wady Tarfa– Wady Khareet– Wady Dara
Major Achievements18. Surface Water
Modeling Wady Quena: Two
different approaches
32°30'E
32°30'E
33°0'E
33°30'E
33°30'E
26°0'N 26°0'N
26°30'N 26°30'N
27°0'N 27°0'N
27°30'N 27°30'N
28°0'N 28°0'N
±0 10 20 30 405 Kilometers
Major Achievements18. Surface
Water Modeling
Wady Quena
32°30'E
32°30'E
33°0'E
33°30'E
33°30'E
26°0'N 26°0'N
26°30'N 26°30'N
27°0'N 27°0'N
27°30'N 27°30'N
28°0'N 28°0'N
±0 10 20 30 405 Kilometers
Creataceous Nubian Sandstone
Precambrian Volcano-sedimentar
Quaternary Alluvial Deposits
Tertiary Limestone
Major Achievements18. Surface Water
Modeling: Wady Sannour
Major Achievements18. Surface Water
Modeling: Wady Sannour
Major Achievements18. Surface Water
Modeling: Wady Abbad
Major Achievements18. Surface
Water Modeling:
Wady Abbad
Geophysical Tests
19. Geophysical ProgramWady QuenaWady Dara
Plan of WorkGroundwater Modeling
• Develop a conceptual GW flow model• Construct a two-dimensional GW model• Model calibration and validation.• Conduct steady state / transient simulations• Explore alternatives development scenarios for
sustainable utilization of ED water resources.• Explore the utility of coupled surface runoff / gw
flow models for selected Wady(s).
Major Achievements20. Groundwater
Modeling:Wady AssuitySustainable extraction Scenarios
Major Achievements20. Groundwater
Modeling:Wady Dara
Data Processing / Sharing21. Interactive Web Site for the EDP
http://www.ims.esrs.wmich.edu/website/IMS_UNDP
DBMSSQL Server
DBMSSQL Server
DBMSSQL Server
CU
SDE
Application ServerWM
SDE
Application Server
Web browser
MUDBMS
ArcIMS
Client
ArcIMSArcIMSArcIMS is utilized in the is utilized in the
integration of local GIS data integration of local GIS data sources with Internet data sources with Internet data sources for display, query, and sources for display, query, and analysis using a web browser analysis using a web browser
Client
Figure 21 Arc IMS Framework
Data Processing / Sharing22. GIS Data Base hosting all layers/products23. Web-based GIS
http://ims.esrs.wmich.edu/website/ims_undp
Ex. Extraction of Stream Network
22. GIS Data Base hosting all layers/products
23. Web-based GIS
Extraction of stream network from digital elevation data; Area W. Matully
24. GW Potential Development Model
Four Major Types Identified:
1) Nubian aquifer groundwater residing in shallow alluvial aquifers,
2) Meteoric groundwater reservoirs in fractured basement rocks,
3) Alluvial aquifers recharged by modern meteoric precipitation,
4) Meteoric groundwater reservoirs related to dyke swarms.
GW Development Potential
Looking for Similar Settings
For each of these groups, we defined a set of criteria (e.g., geochemical, morphologic, lithologic) to enable the identification of locations for potential productive wells of similar hydrogeologic/geologic setting
Type (1): Thick Alluvial Deposits in Valleys Proximal to the Nile Graben.
Wady Assuity:
• Isotopic composition of shallow aquifer water shows a major contribution from the deep Nubian aquifer.
• Major sub-vertical Faults connecting the deep nubian aquifer to the shallow quaternary alluvial aquifer
Proposed Well Locations for Type (1)
Potential Wells identified near the Nile River at the intersection of NW sub-vertical faults and NE reactivated faults
Another Example: Gulf of Suez Coastal Plain
Potential Wells identified within the Gulf coastal plain
Wadi Dara: δD = -52 ‰ , δ18O = -7‰
Targeted Groundwater Basins Type (2): Fractured Basement Meteoric Aquifers• Precipitation is channeled as surface run-off and sub surface
groundwater flow in the alluvial sediments flooring the valleys (wadis). A portion of the runoff gets trapped within the underlying fractured basement before draining into Red Sea or River Nile.
• Basement rocks are massive and lack porosity. Faults and shear zones induce porosity.Criteria
• Presence of intersecting faults and shear zone.• Presence of rocks like serpentinites which induce porosity.• Size of the drainage network.• Amount of precipitation.• Presence of kinks in the valleys.• Isotopic composition similar to the modern water.• Low percent alluvial
Meteoric Groundwater in Fractured basement cont..
δD = -8.27 ‰ , δ18O = -1.92 ‰, Watershed area = 150 km2 , % alluvial = 3%
FAWAKHIR WELL
Potential Wells identified within the central Eastern Desert
Type (3): Meteoric Precipitation in alluviumsDeveloped criteria
• Size of the watershed.
• High precipitation.
• % of alluvium.
• Isotopic composition similar to modern water.
• Tritium
Example - Wadi Tarfa• Watershed Size = 5500 km2
• Precipitation = 150 mm/5 yr• Isotopic composition
plotting along evaporation line from siddi barani rain.
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-120
-60
0
60
-12 -6 0 6
δ18O
δD
meteoric water line
Nile river
Eastern Desert groundwater
Sidi Barrani rain
Western Desert Nubian aquifer paleowater
Wadi Tarfa groundwater
Gulf of Suez paleowaters
Potential Wells Identified in the Alluvial Sediments recharged by the meteoric precipitation
• Watershed size between 700 km2 -74,000 km2
Meteoric groundwater intercepted by dykesCriteria Developed
• Dykes intersecting drainage networks.
• Large drainage network.• Isotopic composition of
groundwater similar to modern precipitation.
• Thick, long and impermeable dykes.
• Amount of precipitation• % of alluvial sediments
Well BirUmm Duqal
Wadi Umm Taghir
Well BirAddub
Wadi Abu-Zawal
Meteoric groundwater intercepted by dykes cont..
Well 73 –• Watershed area
= 40 km2 , • Precipitation =
18 mm ,• alluvial percent
= 7%, • dyke length = 15
km
Well 167 –• Watershed
area = 180 km2 ,
• Precipitation = 18 mm ,
• alluvial percent = 10%,
• dyke length = 3.6 km
!(
!(
73
167
25. Mapping of Potential Wells across the Entire Eastern Desert
- Developed set of 10 digital products.
- Generated Web-based GIS to host these datasets
http://ims.esrs.wmich.edu/website/IMS_UNDP/
- Identified Groundwater potential locations for the following:
Fossil Water – 63 locationsFractured Basement – 68 locationsAlluvial Sediment – 14 locationsDykes Related – 23 locations
Plan Of Work
Development Scenarios and EIA
• Assessment of current status, Base-line conditions and socio-economic settings.
• Environmental Impact Assessment.
• Potential sustainable pumping.
• Probable development potential.
• Conjunctive use.
Building National Capacities26. Capacity building program :
– Training Seminar on Meteorology and HydrologySep, 2003
– Training Seminar on RS & Image Processing Using PCIOct, 2003.
– Training Seminar on Geochemisty and Isotopic AnalysisDec, 2003.
– Training Seminar on Surface Water Modeling using WMSDec, 2003.
– Training Seminar on Ground Water Modeling using GMSJan , 2004
– Training Seminar on Remote Sensing and GIS ApplicationsApr , 2004
– Training Seminar on Integrated Methodology for Assessing the Groundwater Development Potential in Arid Regions
Oct, 2004.
Dissemination….27.Second Regional Conference on Arab Water,
Action Plans for Integrated Development, organized by the NWRC. A special UNDP session on Arid Regions Hydrology is coordinated by the project to disseminate results and investigate potential future regional cooperation and replicability.
28.Regional Dissemination Workshop, Dec 2005, Giza, Egypt
29.Refereed Publications: Production of two papers concerning the geochemical analysis and results for the Eastern Desert, and the Modeling of WadyAssuity.
The Eastern Desert Project Dissemination Workshop
Cairo University
Assessing Groundwater Development Potential in Arid and Hyper Arid Regions
for the UNDP/GEF Funded Project
The Eastern Desert ProjectDecember, 11-12, 2005
Intercontinental, Pyramids Park ResortGiza, Egypt
AgendaDay One, Sun. Dec. 11th, 2005Registration9:00 – 10:00 High TeaOpening 10:00 - 10:10 Workshop Highlights……………………………..Dr. Ahmad WagdyProject Director, UNDP – Cairo University10:10 - 10:20 Welcoming note………………………………..Dr. MoatazKhorshidVice President for Graduate Studies & Research, Cairo University10:20 - 10:30 Welcoming Address………………………….. Mr. Antonio VigilanteResident Representative, UNDP10:30 - 10:40 Welcoming note..…………………………...Dr. ShadenAbdelgawadChairperson, National Water Research Center
Major Achievements24. Reports;
• Surface water modeling for Wady Quena (1)• Surface water modeling for Wady Quena (2)• Surface water modeling for Wady Abbad• Surface water modeling for Wady Sannour• Surface water modeling for Wady El-Qarn• Geophysical investigations for Wady Dara• Geophysical investigations for Wady Qena (incomplete)• Groundwater Modeling for Wady Assuity (updated)• Groundwater Modeling for Wady Quena• Groundwater Modeling for Wady Dara• Application of Remote Sensing and GIS Techniques for
Hydrogeological Investigations of Wady Systems in the Eastern Desert of Egypt
• Geochemical and Isotopic Constrains on the Origin of the Eastern Desert Groundwater. (will be expanded upon availability of new samples)
• Report for Short Course on Integrated Methodology for Groundwater Assessment using Remote Sensing, GIS, GMS, and WMS.
• Methodology for Developing Groundwater Resources in Arid Lands. (First Draft)
Finally…..• Integrated Work• Multidisciplinary• Research• Development• Practical methodology and replicable
model that may augment policies.• We really hope that by the end of the
project we will have contributed an output that really serves the best for our nation and our region.