| Autor: |
Joseph Maestas, Robert Padilla, Paula Makar |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
World Environmental and Water Resources Congress 2014. |
| DOI: |
10.1061/9780784413548.152 |
| Popis: |
The channel of the Middle Rio Grande (MRG) has been confined to a narrow corridor by riverside infrastructure and geology. It is actively evolving in most locations in response to reduced sediment loads and managed flow regimes due to reservoirs and diversions. In support of Reclamation’s responsibility for MRG Project river maintenance, river work identification and planning follows a systematic process involving: 1) monitoring and analysis; 2) need assessment; 3) work classification; 4) documentation of results; and 5) programmatic project and work planning. This paper describes the methodology for step 2; determine the relative Need for river maintenance. The Need for river maintenance relies on both the Value of the maintenance and the Likelihood of the necessity for maintenance. In the described methodology, Value and Likelihood are rated by water resources professionals using technical factors associated with river conditions, public interests, and water delivery. Each factor has individual criteria which are updated as state of the practice river hydraulic, geomorphic and ecological monitoring and assessment improve. The final relative Need for river maintenance is the product of the Value and Likelihood ratings at each location. In a pilot application test of the rating criteria, the Need for river maintenance was calculated for 10 sites and 2 reaches for the value-based technical factors of Public Health & Safety and Water Delivery. Resulting ratings from the pilot testing were consistent with professional and experiential judgment and objectively reflected the significance of the sites and reaches for the technical factors. Next steps for Need for river maintenance are the development of ecologic and cultural resource ratings. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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