Water shortage has been an issue for urbanized areas. For the Penang state in Malaysia, it is forecast that there will be a significant increase water demand future. authorities Malaysia are trying to find alternative source overcome problem, with one of options being Perai River catchment. However, river quality was found polluted and not suitable used extraction domestic consumption. This pap...

Background: Consistent with Rule 100 of Michigan’s Water Quality Standards (WQS), Lake Allegan is protected for warmwater fishery, other indigenous aquatic life and wildlife, agriculture, navigation, industrial water supply, partial body contact recreation, and total body contact recreation. Prioritization of the Lake Allegan TMDL was driven by Michigan’s five-year rotating watershed assessment...

Accurately characterizing point source phosphorus and communicating that description is a critically important step in the development of a total maximum daily load (TMDL) and the supporting water quality modeling. This is particularly critical for low phosphorus targets, which result in small wasteload allocations. Small wasteload allocations mean point sources must spend millions of dollars i...

This article presents a seven-step procedure for developing environmentally safe total maximum daily loads (TMDLs) for selenium. The need for this information stems from recent actions taken by the U.S. Environmental Protection Agency (EPA) that may require TMDLs for selenium and other contaminants that are impairing water bodies. However, there is no technical guidance from EPA or elsewhere th...

First posted June 28, 2021 For additional information, contact: Director, New England Water Science CenterU.S. Geological Survey10 Bearfoot RoadNorthborough, MA 01532 The California Department of Transportation, commonly known as CalTrans, and other municipal separate storm sewer system permittees in well State departments transportation nationwide need information about potential loads yields ...

Today we are making available the technical document “Options for the Expression of Daily Loads in TMDLs.” This document was drafted to provide technically sound options for developing daily load expressions as a routine process in TMDLs calculated using allocation time frames greater than daily (e.g., annual, monthly, seasonal). The document is written for TMDL practitioners who are familiar w...

the north bosque river (nbr) was included in the clean water act § 303(d) impaired list. the texas institute for applied environmental research used the soil water assessment tool (swat) to develop a phosphorus (p) total maximum daily load. swat was modified to dynamically change manure application rates based on simulated annual soil p, change areas receiving manure, alter manure quantities ea...

The Spreadsheet Tool for the Estimation of Pollutant Load (STEPL) can be used for Total Maximum Daily Load (TMDL) processes, since the model is capable of simulating the impacts of various best management practices (BMPs) and low impact development (LID) practices. The model computes average annual direct runoff using the Soil Conservation Service Curve Number (SCS-CN) method with average rainf...