CDIP Wave MO nitoring & P rediction ( MOP ) System Surfzone Currents & Beach Water Quality Huntington Beach –

1. CDIP Wave MOnitoring & Prediction (MOP) SystemSurfzone Currents & Beach Water QualityHuntington Beach – Case Study S. Grant W.C. O’Reilly F. Feddersen R.T. Guza

2. CDIP Directional Wave Buoy Network Alongshore Prediction of Nearshore Waves Alongshore Prediction of the Surfzone Current Directions and Speeds Surfzone Source Detection Model FIB ENT Counts vs. Current Direction Surfzone Pollutant Trajectory Model

3. CDIP Directional Wave Buoy Network Alongshore Prediction of Nearshore Waves Alongshore Prediction of the Surfzone Current Directions and Speeds Surfzone Source Detection Model FIB ENT Counts vs. Current Direction Surfzone Pollutant Trajectory Model

4. The CDIP MOnitoring & Prediction System Outer & Inner wave buoys are placed at wave model boundaries for assimilation and validation. Local Model Global Model Shelf Model Shelf Model Shelf Break Local Model Surfzone Current Model CROSS SECTION PLAN VIEW

5. Southern California Wave Observation Network So Cal MOP System Datawell Directional Waveriders

6. Southern California Wave Observation Network So Cal MOP System Outer Wave Buoys Measure Arriving Swell from the Open Ocean

7. Southern California Wave Observation Network So Cal MOP System Inner Wave Buoys Measure Locally Generated Seas

8. Southern California Wave Observation Network So Cal MOP System Huntington State Beach “Roving” Wave Buoy (20m depth)

10. CDIP Directional Wave Buoy Network Alongshore Prediction of Nearshore Waves Alongshore Prediction of the Surfzone Current Directions and Speeds Surfzone Source Detection Model FIB ENT Counts vs. Current Direction Surfzone Pollutant Trajectory Model

11. HB06 Surfzone Current Model Validation CDIPMOnitoring andPrediction Orange County MOP Sites

12. Mean Alongshore Current Model Validation Sep-Oct 2006 Northward Current Southward Current Flow Reversal 14

13. CDIP Directional Wave Buoy Network Alongshore Prediction of Nearshore Waves Alongshore Prediction of the Surfzone Current Directions and Speeds Surfzone Source Detection Model FIB ENT Counts vs. Current Direction Surfzone Pollutant Trajectory Model

14. Summer Mean Surfzone Currents: North OC

15. Pollutant Trajectory Age : Constant SAR Discharge

16. EBB Discharge Trajectory from Magnolia Street Ebb Strength Strong Weak

17. CDIP Directional Wave Buoy Network Alongshore Prediction of Nearshore Waves Alongshore Prediction of the Surfzone Current Directions and Speeds Surfzone Source Detection Model FIB ENT Counts vs. Current Direction Surfzone Pollutant Trajectory Model

18. Pollutant Source FIB Sites Surfzone current Waves HIGHER ENT COUNTS LOWER ENT COUNTS

19. Magnolia St Ebb Discharge Model w/ FIB Overlay (Summer) ENT > 30 10-30 < 10

23. Magnolia St. Ebb Discharge Model w/ FIB Overlay (Summer) ENT < 10 10-30 > 30