Location Levels for CWMSPlot Ignoring Hours and TimeZone

[krowvin]

LRH is attempting to plot various projects here:
https://wm.rsgis.dev/lrh/data/plots

Issue: Their levels do not line up with the timeseries.

I have worked with @tracyfraley1 to determine that CWMSPlot looks to slice the date string removing everything but the date. I believe CDA will treat timestamps as UTC/Zulu if a offset is not provided in the timestamp at the end.

It appears the Level fetch begin and end has the hours and timezone truncated:

• groundwork-water/lib/components/data/plots/CWMSPlot.jsx

  Line 166 in b419a86

  begin: begin?.slice(0, 10),

You can see the fetch call this makes in the network tab here:
https://cwms-data.usace.army.mil/cwms-data/levels?level-id-mask=NoFkPound.Elev.Inst.0.Top%20of%20Normal&office=LRH&unit=EN&begin=2025-01-29&end=2025-02-03&format=json

Namely the date becomes 2025-01-29 instead of 2025-01-29T05:30:00-06:00. I do think part of this could be blamed on the lack of clarification on the swagger page/docs for CDA.

Plot showing offset issue

Edit:
Issue created on CDA issues regarding timestamps/lack of docs:

• Location Levels Endpoint Broken Headers and Poor Date Labeling USACE/cwms-data-api#1020