Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Loading is the measure of the amount of a substance, usually nutrients or sediment, that is discharged into a body of water over a specific amount of time. Units are in weight per unit time, and are calculated by multiplying flow and concentration of the substance of interest.
Public Domain.
