Natural Sources
Man's Input
Chemical Cycles
The Branches
Landuse
100

Small mountain streams may have low, acidic, pH values due to this obvious source.

What is organic matter from forests?

100

Causes stream impairment on both the North and West branches of the Susquehanna due to Carboniferous age bedrock.

What is Acid Mine Drainage?

100

This causes changes in pH in the Susquehanna River on a daily basis.

What is photosynthesis?

100

This is principle branch of the Susquehanna River.

What is the North Branch?

100

Most forested subbasin in the Susquehanna River drainage basin.

What is the West Branch?

200

The most abundant dissolved ion in the Susquehanna River is derived from this natural process.

What is the dissolution of Limestone?

200

Fe and these two other metals often cause Acid Mine Drainage.

What are Aluminum and Manganese?

200

Winter and spring floods commonly cause these 2 chemicals to enter stream systems in abundance.

What are Phosphorous and Nitrogen?

200

Name of the largest of 6 subbasins in the Susquehanna Drainage Basin.

What is the West Branch?

200

The most populated (and polluted) Subbasin in the Susquehanna River drainage area is ....

What is the Lower Susquehanna River Subbasin?

300

The time of year when pH and DO of the Susquehanna River is lowest.

What are the summer months?

300

The best explanation for high amounts of sodium sodium in stream systems like the Susquehanna River.

What is pollution by road salt?

300

A type of organism that excretes a CaCO3 skeleton from dissolved ions in stream water is...

What are mussels?

300

Subbasin that receives the greatest amount of precipitation in the Susquehanna River drainage basin.

What is the Lower Susquehanna River?

300

Changes in river gradient prompted this type of land use throughout the river basin, but mostly so on the West Branch and Lower Susquehanna River subbains.

What is the generation of power or installation of hydroelectric dams?

400

Zone of reduction where macroinvertebrate feces creates zone of reduction.

What are pore spaces?

400

The coolest branch of the Susquehanna River is the...

What is West Branch?

400

These 2 phenomena result in dissolved oxygen being added to the river on a daily basis.daily.

What is photosynthesis and the mixing of the river by the wind?

400

The river branch with the highest specific conductivity is

What is the West Branch (200-800)?

400

The Lower Susquehanna River Subbasin has its greatest land use in...

What is agriculture?

500

The name of the orange mineral precipitate that coats streams influenced by acid mine drainage.

What is ferric oxyhydroxide?

500

The lowest pH recorded on the Susquehanna ranges between...., creating a deadzone along the West Branch.

What is 3.9-4.4

500

The cyclic phenomena that provides the greatest nutrients for benthic macroinvertebrates (BMI) occurs due to...

What is the falling of leaves or autumn?

500

The Susquehanna tributary that adds greatest glacial sediment input that is not a major branch of the river...

What is the Chemung River?

500

With so many rivertowns along the banks of the Susquehanna and increased effects of global warming, this source of chemical pollution has become increasingly toxic and common.

What is storm run off?