نتایج جستجو برای: tmdl

تعداد نتایج: 152  

ژورنال: :فصلنامه علمی- پژوهشی آب و فاضلاب 2015
الهام فرجی عباس افشار فرزانه فیضی

در این پژوهش قابلیت الگوریتم کاوش سیستم ذرات باردار(css) در حل مسائل بهینه سازی مهندسی آب بررسی شد. ابتدا دو نمونه از مسائل نسبتاً پیچیده ریاضی توسط الگوریتم css حل شد و نتایج آن با نتایج سایر الگوریتم های فراکاوشی مقایسه شد. در انتها کاربرد مدل بهینه سازی توسعه داده شده توسط الگوریتم css در تخصیص بار آلاینده با رویکرد مجموع حداکثر بار روزانه (tmdl) در رودخانه، نشان داده شد. به منظور قضاوت درست ...

Journal: :Water 2023

The operationalization of water resource protection initiatives for surface quality and equitable allocation is critical sustainable socio-economic development. This paper assessed Blesbokspruit River Catchment’s status, using the South African Water Quality standards Index (WQI). Protection levels quality, waste discharge point sources were set evaluated total maximum daily loads (TMDLs) chemi...

Journal: :Sustainability 2021

The National Wild and Scenic Rivers Act protects less than ¼ of a percent the United States’ river miles, focusing on free-flowing rivers good water quality with outstandingly remarkable values for recreation, scenery, other unique attributes. It predates enactment Clean Water Act, yet includes clear anti-degradation principle, that pollution should be reduced eliminated designated rivers, in c...

2006
Robert D. Gibbons

A statistical approach for making impairment determinations in the Section 303(d)listing process is developed. The method is based on the 100(1 a ) percent lower confidence limit on an upper percentile of the concentration distribution. Advantages of the method include: (1) it provides a test of the null hypothesis that a percentage of the true concentration distribution fails to meet a regulat...

Journal: :Environmental monitoring and assessment 2004
Pamela J Edwards Karl W J Williard James N Kochenderfer

Five methods for estimating maximum daily and annual nitrate (NO3) and suspended sediment loads using periodic sampling of varying intensities were compared to actual loads calculated from intensive stormflow and baseflow sampling from small, forested watersheds in north central West Virginia to determine if the less intensive sampling methods were accurate and could be utilized in TMDL develop...

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