User story: As public health specialist, I want to know whether to expect higher than normal summer algal blooms in the reservoir from the surrounding farms from spring fertilizer application.

Feature: Enable, for a specific site, state or Water Resources Region (HUC2), cumulative runoff (in mms) data to be plotted as a time series for a user-selected:

1. calendar year
2. water year with the historic percentiles as well. Time periods to build:
3. daily
4. 7-day
5. 14-day
6. 28-day OR monthly [would we need both? WW uses 28-day: is that better than monthly?]

Other plotting/filtering options to consider (based on user need):

• log scale
• lines for highest and lowest cumulative runoff years
• also plot as cubic meters per second
• also plot by climate year (what's this?)
• enable image downloading

Examples in current WW app:

multi-site: https://waterwatch.usgs.gov/index.php?id=wwdur_cumrunoff

site level: https://waterwatch.usgs.gov/index.php?id=drought_cumflow