Waves and beaches in PatagoniaThe Refugio de los Lobos ProjectIng. Jorge E. Abramian, Civiltec Consultores SRL

• SHOW CHALLENGES OF A BEACH NOURISHMENT AND DUNE RECONSTRUCTION PROJECT IN PATAGONIA

• PROMPT DISCUSSIONS ABOUT INVOLVED ENVIRONMENTAL CRITERIA

PRESENTATION CONTENTS

• URBAN DEVELOPMENT NEXT TO A POCKET BEACH SOUTH OF PUNTA MÁRQUES

• PUNTA MÁRQUES HOSTS A SEA LION COLONY

• TIDAL RANGE IS 6.0 M

• HISTORICALLY, THE SITE WAS USED FOR SAND MINING

• CURRENTLY IS USED FOR QUAD RIDES

• NO RAMPS OR ADEQUATE FACILITIES TO LAUNCH SAILBOATS IN THE AREA

PROJECT CONTEXT

• BUILD AN URBAN DEVELOPMENT 15 KM SOUTH OF THE CITY OF COMODORO RIVADAVIA (240.000 PEOPLE)

• POSSIBILITY FOR MARINAS TAKING ADVANTAGE OF THE TIDAL RANGE• BUILD AN INLAND LAGOON

• AND A LOW PROFILE CHANNEL (+4)

• WHEN THE TIDE RISES, CHANNEL COULD BE SAILED. THE LOCK IS CLOSED BEFORE SEA GOES BACK

• WATER IS HOLD IN THE LAKE UNTIL NEXT CYCLE

DEVELOPERS’ IDEA

• ASSESS CHANGES THE PROJEC MAY IMPOSE TO THE BEACH

• HYDROGRAPHIC SURVEY

• SEDIMENT SAMPLING

• WAVE TRANSFORMATION

• CROSS SHORE SBEACH MODELING

• LONGSHORE GENESIS MODELING

• STABILITY OF THE WATER TABLE

BEACH PROJECT

BEACH PROFILES

• ERA-40, “European Centre for Medium Range Weather Forecasts”

WAVES AND WINDS

• OFFSHORE • NEARSHORE

WINDS

• 2003 - 2017

SHORELINE CHANGES - IMAGES GENESIS

SBEACH

PROPOSED PROJECT

• BUILDING A FIRST REACH OF THE BEACH ENHANCEMENT

• PUBLIC STILL DOESN’T UNDERSTAND THE BENEFITS OF DUNE RESTORATION AND BEACH WIDENING

• THE DUNE AND BERM ARE HOLDING

PROJECT TODAY

• THE LAND WAS HEAVILY DETERIORATED DUE TO MINING AND QUAD RIDING

• BASED ON HISTORIC DATA AND ANALYSIS BEACH NOURISHMENT AND BERM RECONSTRUCTION WAS RECOMMENDED AS A MITIGATION AND PREVENTIVE MEASURE

• PART OF THE PROJECT WAS BUILT AND IT IS HOLDING

• PUBLIC DOES NOT VALUE THE BEACH RESTORATION

• THE MARINA PART OF THE PROJECT IS YET TO BE DESIGNED

CONCLUSIONS

• THANK YOU!

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