SEA-LEVEL RECORD AND SCENARIO WORKSHEET
Yenra | October 11, 2026
Guide: https://yenra.com/sea-level-rising/
Historical observations: https://www.tidesandcurrents.noaa.gov/trends-and-extremes/index.html
Trend explanation: https://tidesandcurrents.noaa.gov/sltrends/faq.shtml
Inundation exploration: https://coast.noaa.gov/digitalcoast/tools/slr.html

Purpose: record historical observations and future scenarios separately.
Use the historical product's current link to NOAA's Sea Level Calculator
when forward-looking scenarios are needed. Do not use a historical fitted
rate as a substitute for a future scenario or local flood assessment.

OBSERVATION
Coast / question:
Station name, identifier, and URL:
Retrieval date and data release:
Observation start and end years / gaps:
Quantity (local relative sea level, global average, etc.):
Reported rate and units:
Reported interval and confidence level:
Axis reference / datum / seasonal adjustment:
Fit method:
Land motion information and source:
Representativeness of station for the place of interest:

Interpretation sentence:
At [station], over [period], [quantity] changed at [rate and units], with
[reported uncertainty]. This observation applies to [scope and limits].

FICTIONAL UNIT EXERCISE -- not a forecast or a named station's rate
Assume 3.0 millimeters/year stays constant for 20 years.
3.0 x 20 = 60 millimeters = 6 centimeters = 0.06 meters.
This is accumulated change under an assumption, not a flood elevation.

FUTURE SCENARIO -- complete separately if used
Product, URL, version, and retrieval date:
Scenario name and assumptions:
Baseline year and future year:
Quantity, units, and vertical reference:
Geographic coverage:
Projected range / uncertainty:

LOCAL IMPACT QUESTION
Are land and water elevations in compatible vertical references?
What elevation-data and connectivity limitations apply?
What does the mapping-confidence layer show?
Which tides, storms, waves, drainage, and protective features need assessment?
Which applicable local information or professional assessment is needed?

CONCLUSION CHECK
[ ] Observed trend, modeled scenario, and local impact are labeled separately.
[ ] Rate, elevation, units, and reference have not been mixed.
[ ] Record length and uncertainty accompany any quoted historical rate.
[ ] A visual boundary is not treated as a property-specific determination.
[ ] The next evidence needed is stated clearly.