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Modeling Sediment Inputs to Maunalua Bay

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Short_Article_Sediment_Pollutes.pdf Short Article 673.56 kB Adobe PDF View/Open
Knowledge_Domain.pdf Knowledge Domain 421.53 kB Adobe PDF View/Open
Community_Presentation.pdf Community Presentation 1.56 MB Adobe PDF View/Open
Outreach_Flyer.pdf Outreach Flyer 524.58 kB Adobe PDF View/Open
Biophysical Table - Sediment - 2.txt.xml Model Input - Biophysical Table 822 B XML View/Open
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rainfallerosivity.tif Model Input - Rainfall Erosivity 86.04 MB TIFF View/Open
dem.tif Model Input - Digital Elevation Model 86.04 MB TIFF View/Open
lulc_mb20111.tif Model Input - Land Use/Cover 21.52 MB TIFF View/Open
MB_Watersheds_Complete_Polyg1.tif Model Input - Watersheds Outline 128.6 kB TIFF View/Open
soilerodibility.tif Model Input - Soil Erodibility 86.04 MB TIFF View/Open
Nutrient_Delivery_Ratio_Model_Input_Screenshot.JPG Model Input - Calibration Metrics 97.87 kB JPEG View/Open
inc_251.tif Model Input - Climate Scenario +25% 86.03 MB TIFF View/Open
dec_251.tif Model Input - Climate Scenario -25% 86.03 MB TIFF View/Open
dec_101.tif Model Input - Climate Scenario -10% 86.03 MB TIFF View/Open
inc_101.tif Model Input - Climate Scenario +10% 86.03 MB TIFF View/Open
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Item Summary

Title:Modeling Sediment Inputs to Maunalua Bay
Authors:Antaky, Carmen
Payne, Courtney
Langston, Blaire
Harrison, Tanya
Martin, Brendan
Contributors:Oleson, Kirsten (instructor)
Crow, Susan (instructor)
Keywords:Sediment Delivery Model
Maunalua Bay
Date Issued:03 May 2017
Abstract:Mālama Maunalua identified polluted runoff and sediment as the number one threat to Maunalua Bay. Sediment is one of the primary land-based threats to corals and other marine organisms because it decreases light availability, smothers coral and alters habitats. Rain runoff transports sediment through streams and into the bay. In Maunalua Bay, runoff is high due to increased human populations and stream channelization. This stream channelization causes water to move downstream at a faster than normal rate and increases the amount of sediment. We review some options for homeowners to mitigate the amount of sediment reaching the streams. To create effective management solutions for sediment pollution in the bay, we modeled the current sediment exports. We analyzed the contributions of each watershed and correlations with land use type. We found that most sediment is retained in the upper part of the watershed in forested areas, and that most outputs come from Waialaenui and Wailupe. We suggest that any stream restoration activities should focus on the Waialaenui and Wailupe as this will have the most drastic effect on sediment loads.
Appears in Collections: 2017 Maunalua Bay Case Study

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