Blue Cypress Lake lake and shoreline

About Blue Cypress Lake

Officially Blue Cypress Lake (Upper St. Johns)

Florida

Blue Cypress Lake is managed by St. Johns River Water Management District. Lake Insights displays its latest available elevation from St. Johns River Water Management District. Published reference elevations are listed below.

Lake Status

2.43 feet below full pool

−2.43 ft vs full pool

7-day trend
Rising
7-day change
Up 0.31 ft
30-day change
Up 0.91 ft
Last updated
10 hours ago

Blue Cypress Lake is currently 2.43 feet below full pool and has risen slightly over the past week. Recent conditions indicate improving reservoir levels, although the lake remains below its normal operating elevation.

Key Facts

Waterbody / project type

Reservoir

Full pool

25.00 ft

Datum

NAVD88 · MSL

Current-level source

St. Johns River Water Management District

Why the level can change

General factors for reservoirs like this

These are common influences for this type of lake. They do not identify the cause of a specific current change unless an operator update confirms it.

  • Rainfall & inflows

    Rain and upstream river inflows can raise reservoir levels, especially after storms.

  • Downstream releases

    When an operator releases water through a dam, reservoir storage can fall and downstream flows can rise.

  • Flood-risk operations

    Some projects store or release water under flood-risk rules when conditions require it.

  • Water supply

    Some reservoirs support municipal, industrial, irrigation, or regional water-supply needs.

  • Hydropower

    Hydropower projects may pass water through turbines when generating electricity.

  • Seasonal weather

    Dry periods, heat, evaporation, and seasonal rainfall patterns can affect storage over weeks and months.

Published reference elevations

Full pool
25.00 ft

Published reference elevation. Not necessarily a fixed year-round target for every project.

Current data source

Managing authority: St. Johns River Water Management District

Observation source used by Lake Insights: St. Johns River Water Management District

Who manages the lake and who publishes the reading Lake Insights displays can differ. Lake Insights does not invent a source label from the managing authority alone.

General education

Shared background — not lake-specific facts

Lake Insights aggregates water level information from authoritative public sources such as the U.S. Army Corps of Engineers, NOAA, TVA, Bureau of Reclamation, power utilities, and other official lake operators. We preserve historical observations, calculate trends, and present lake conditions in a consistent format. For St. Johns River Water Management District, we link to the official source whenever it is available. Lake Insights does not predict future lake levels unless an official forecast has been published by the managing authority.

How we source lake data · Glossary

Common questions about Blue Cypress Lake

Who manages Blue Cypress Lake?
Blue Cypress Lake is managed by St. Johns River Water Management District. Lake Insights reports published gauge readings; it does not operate the waterbody.
What is full pool at Blue Cypress Lake?
The published full-pool elevation for Blue Cypress Lake is 25.00 ft (NAVD88). Full pool is a published reference elevation — not a prediction of today’s level.
Where does Lake Insights get the level reading for Blue Cypress Lake?
Lake Insights displays the latest available elevation for Blue Cypress Lake from St. Johns River Water Management District. The managing authority (St. Johns River Water Management District) may differ from the agency that publishes the observation used on this page.
What datum is used for Blue Cypress Lake?
Elevations for Blue Cypress Lake are referenced to NAVD88 (MSL).

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