Your Tasks Due Today:

1. Watch the video podcasts shown below before coming to class today.

2. Complete the Video Response Canvas Quiz before coming to class today.

Educational content addessed in this chapter:

• What is the "ordinary condition" of the a river's hydorlogy?
  • Simple cases of too dry or too wet
  • Historical environmental analysis
  • Shifting baselines
• Styles of hydrologic functioning
  • Steady state
  • Cyclical equilibrium
  • Dynamic metastable equilibrium
  • Dynamic equilibrium
  • Episodic disequilibrium
  • Non equilibrium
• Koppen climate classification system
• "Natural Flow Regime" concept
  • 5 key variables (magnitude, frequency, timing/predictability, duration, rate of change)
  • Examples of flow regime metrics
• Researching historical hydrology
  • historical information and data sources
  • Modern datasets

Assignment we will work on in class today:

• If needed, finish assignment 1 or else we wil begin assignment 2

Related web links:

• TBD

Video Podcast: Historical Hydrology - Part 1

This 26-minute presentation explains why it is important to investigate the history of hydrology for a given river as opposed to assuming that present conditions are indicative of how they were at the time of statehood when states gained equal footing on matter ssuch as title to riverbeds.

• 640 x 480 (480p) format that balances speed and quality. (157 MB file)
• 1920 x 1280 (HD) format that provides larges size and best quality. (1.4 GB file)

Video Podcast: Historical Hydrology - Part 2

This 24-minute presentation explains the different "styles" of hydrological dynamics. In other words, hydrological time series data show different typical patterns of fluctuation. Knowing what "style" the river has that you are evaluating for navigability helps you evaluate its history and its potential to meet the The Daniel Ball criteria.

• 640 x 480 (480p) format that balances speed and quality. (163 MB file)
• 1920 x 1280 (HD) format that provides larges size and best quality. (1.14 GB file)

Video Podcast: Historical Hydrology - Part 3

This 19-minute presentation lays out a couple alternative approaches to conceptualizing hydrological regimes, and then it goes on to state and exemplify different kinds of historical inormaiton and modern data that can be used to inform historical hydrology.

• 640 x 480 (480p) format that balances speed and quality. (144 MB file)
• 1920 x 1280 (HD) format that provides larges size and best quality. (1.15 GB file)