USGS Site Update water quality

Website update now to include the following:

Chlorophyll, total, water, in situ, fluorometric, 650-700 nanometers, relative fluorescence units (RFU)

Finally, at least SOME infrence to water quality on the USGS site.

Where to I purchase my 1000 page
water chemestry book to know what that means?

jack L

Don’t sweat it, g2d knows it all.

You won’t need it, just watch the trends