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Deer Point Lake algae history from satellite

We read Deer Point Lake from 389 cloud-free satellite scenes between Jan 11, 2016 – Sep 30, 2026. Here is what the surface water showed.

Clear scenes
389
Typical (median), index
18
Highest reading
126 · Dec 20, 2020
Latest scene
17 · Sep 30, 2026

Algae signal (red-edge index) over time

0501001502017201820192020202120222023202420252026Jan 11, 2016: 6.5 index (low)Feb 10, 2016: 15 index (low)Apr 10, 2016: 17 index (low)Jun 9, 2016: 37 index (low)Jun 29, 2016: 59 index (low)Jul 19, 2016: 17 index (low)Oct 7, 2016: 15 index (low)Dec 16, 2016: 4.5 index (low)Feb 14, 2017: 14 index (low)Feb 24, 2017: 14 index (low)Mar 16, 2017: 11 index (low)Apr 25, 2017: 31 index (low)May 15, 2017: 14 index (low)Jun 4, 2017: 21 index (low)Jun 24, 2017: 74 index (low)Jul 9, 2017: 47 index (low)Aug 18, 2017: 26 index (low)Aug 23, 2017: 14 index (low)Sep 12, 2017: 22 index (low)Sep 27, 2017: 12 index (low)Oct 2, 2017: 19 index (low)Oct 17, 2017: 8.5 index (low)Oct 22, 2017: 18 index (low)Nov 6, 2017: 7 index (low)Nov 16, 2017: 5 index (low)Nov 26, 2017: 4 index (low)Dec 16, 2017: 4.5 index (low)Dec 21, 2017: 8.5 index (low)Dec 26, 2017: 6.5 index (low)Jan 15, 2018: 0.5 index (low)Jan 25, 2018: 1.5 index (low)Jan 30, 2018: 6.5 index (low)Feb 19, 2018: 22 index (low)Feb 24, 2018: 19 index (low)Mar 16, 2018: 13 index (low)Mar 21, 2018: 17 index (low)Mar 31, 2018: 15 index (low)Apr 5, 2018: 8 index (low)Apr 20, 2018: 19 index (low)Apr 30, 2018: 21 index (low)May 5, 2018: 34 index (low)May 10, 2018: 41 index (low)May 20, 2018: 53 index (low)May 25, 2018: 22 index (low)Jun 9, 2018: 17 index (low)Jun 19, 2018: 21 index (low)Jun 24, 2018: 87 index (low)Jun 29, 2018: 70 index (low)Jul 9, 2018: 36 index (low)Jul 14, 2018: 30 index (low)Jul 24, 2018: 23 index (low)Aug 8, 2018: 17 index (low)Aug 13, 2018: 16 index (low)Aug 23, 2018: 16 index (low)Aug 28, 2018: 25 index (low)Sep 2, 2018: 31 index (low)Sep 7, 2018: 20 index (low)Sep 12, 2018: 21 index (low)Sep 17, 2018: 22 index (low)Oct 7, 2018: 15 index (low)Oct 12, 2018: 51 index (high)Oct 17, 2018: -283.2 index (low)Oct 27, 2018: 6.5 index (low)Nov 11, 2018: 8.5 index (low)Nov 16, 2018: -0.5 index (low)Nov 21, 2018: 2 index (low)Dec 6, 2018: 15 index (low)Dec 16, 2018: 15 index (low)Jan 5, 2019: 6 index (low)Jan 10, 2019: 5 index (low)Jan 25, 2019: 40 index (low)Jan 30, 2019: -1.2 index (low)Feb 24, 2019: 23 index (low)Mar 6, 2019: 21 index (low)Mar 21, 2019: 17 index (low)Mar 26, 2019: 18 index (low)Apr 10, 2019: 22 index (low)Apr 15, 2019: 34 index (low)Apr 20, 2019: 43 index (low)Apr 30, 2019: 18 index (low)May 5, 2019: 53 index (low)May 15, 2019: 20 index (low)May 25, 2019: 24 index (low)May 30, 2019: 69 index (low)Jun 19, 2019: 71 index (low)Jun 24, 2019: 67 index (low)Jul 4, 2019: 32 index (low)Jul 9, 2019: 22 index (low)Jul 14, 2019: 49 index (low)Jul 24, 2019: 50 index (low)Jul 29, 2019: 36 index (low)Aug 3, 2019: 17 index (low)Aug 13, 2019: 32 index (low)Aug 18, 2019: 18 index (low)Aug 28, 2019: 34 index (low)Sep 2, 2019: 29 index (low)Sep 7, 2019: 14 index (low)Sep 12, 2019: 19 index (low)Sep 17, 2019: 13 index (low)Sep 22, 2019: 17 index (low)Sep 27, 2019: 17 index (low)Oct 2, 2019: 11 index (low)Oct 12, 2019: 13 index (low)Oct 27, 2019: 10 index (low)Nov 1, 2019: 2 index (low)Nov 6, 2019: 13 index (low)Nov 16, 2019: 6.5 index (low)Nov 21, 2019: 2.5 index (low)Dec 1, 2019: 8.5 index (low)Dec 31, 2019: 6.5 index (low)Jan 5, 2020: 12 index (low)Jan 15, 2020: 28 index (low)Jan 20, 2020: 12 index (low)Jan 25, 2020: 6.5 index (low)Feb 9, 2020: 19 index (low)Feb 14, 2020: 27 index (low)Feb 19, 2020: 21 index (low)Feb 29, 2020: 18 index (low)Mar 20, 2020: 20 index (low)Mar 25, 2020: 22 index (low)Mar 30, 2020: 17 index (low)Apr 4, 2020: 11 index (low)Apr 9, 2020: 24 index (low)Apr 14, 2020: 21 index (low)Apr 24, 2020: 13 index (low)May 4, 2020: 29 index (low)May 9, 2020: 32 index (low)May 14, 2020: 40 index (low)May 19, 2020: 49 index (low)May 24, 2020: 73 index (low)Jun 8, 2020: 70 index (low)Jun 13, 2020: 51 index (low)Jun 18, 2020: 18 index (low)Jun 23, 2020: 56 index (low)Jul 8, 2020: 78 index (low)Jul 13, 2020: 27 index (low)Jul 18, 2020: 39 index (low)Aug 2, 2020: 24 index (low)Aug 7, 2020: 35 index (low)Aug 12, 2020: 32 index (low)Aug 17, 2020: 20 index (low)Sep 11, 2020: 29 index (low)Sep 26, 2020: 8.5 index (low)Oct 1, 2020: 8 index (low)Oct 11, 2020: 21 index (low)Oct 16, 2020: 16 index (low)Oct 26, 2020: 16 index (low)Oct 31, 2020: 12 index (low)Nov 5, 2020: 13 index (low)Nov 15, 2020: 18 index (low)Nov 20, 2020: 6.5 index (low)Nov 25, 2020: 17 index (low)Nov 30, 2020: 22 index (low)Dec 5, 2020: 11 index (low)Dec 10, 2020: 7.5 index (low)Dec 15, 2020: 23 index (low)Dec 20, 2020: 126 index (low)Dec 25, 2020: 15 index (low)Jan 4, 2021: 14 index (low)Jan 14, 2021: 11 index (low)Jan 19, 2021: 5 index (low)Jan 29, 2021: 11 index (low)Feb 3, 2021: 11 index (low)Feb 8, 2021: 12 index (low)Feb 23, 2021: 13 index (low)Mar 10, 2021: 15 index (low)Apr 4, 2021: 16 index (low)Apr 19, 2021: 30 index (low)May 4, 2021: 59 index (low)May 9, 2021: 52 index (low)May 14, 2021: 42 index (low)May 19, 2021: 62 index (low)May 24, 2021: 47 index (low)May 29, 2021: 26 index (low)Jun 8, 2021: 72 index (low)Jun 13, 2021: 35 index (low)Jul 23, 2021: 66 index (low)Jul 28, 2021: 36 index (low)Aug 7, 2021: 38 index (low)Aug 12, 2021: 26 index (low)Aug 17, 2021: 73 index (low)Sep 26, 2021: 13 index (low)Oct 16, 2021: 16 index (low)Oct 26, 2021: 6.5 index (low)Oct 31, 2021: 17 index (low)Nov 10, 2021: 10 index (low)Nov 15, 2021: 4.5 index (low)Nov 20, 2021: 11 index (low)Nov 25, 2021: 8 index (low)Nov 30, 2021: -0.5 index (low)Dec 5, 2021: 11 index (low)Dec 25, 2021: 5 index (low)Dec 30, 2021: 25 index (low)Jan 14, 2022: 4.5 index (low)Jan 19, 2022: 7 index (low)Jan 24, 2022: 13 index (low)Jan 29, 2022: 9 index (low)Feb 13, 2022: 17 index (low)Feb 23, 2022: 21 index (low)Mar 5, 2022: 11 index (low)Mar 20, 2022: 34 index (low)Mar 25, 2022: 25 index (low)Mar 30, 2022: 53 index (low)Apr 4, 2022: 21 index (low)Apr 9, 2022: 28 index (low)Apr 19, 2022: 23 index (low)May 4, 2022: 25 index (low)May 9, 2022: 45 index (low)May 29, 2022: 83 index (low)Jun 3, 2022: 23 index (low)Jun 18, 2022: 41 index (low)Jun 23, 2022: 105 index (low)Jun 28, 2022: 88 index (low)Jul 8, 2022: 67 index (low)Jul 18, 2022: 87 index (low)Aug 2, 2022: 35 index (low)Aug 17, 2022: 37 index (low)Aug 22, 2022: 18 index (low)Sep 6, 2022: 28 index (low)Sep 16, 2022: 23 index (low)Oct 1, 2022: 12 index (low)Oct 6, 2022: 7 index (low)Oct 11, 2022: 11 index (low)Oct 21, 2022: 4.5 index (low)Oct 26, 2022: 2.5 index (low)Nov 15, 2022: 16 index (low)Dec 5, 2022: 12 index (low)Dec 10, 2022: 15 index (low)Dec 15, 2022: 5.5 index (low)Dec 25, 2022: 3.5 index (low)Jan 4, 2023: 14 index (low)Jan 9, 2023: 7 index (low)Jan 14, 2023: 8.5 index (low)Jan 19, 2023: 30 index (low)Feb 3, 2023: 26 index (low)Feb 8, 2023: 18 index (low)Feb 13, 2023: 12 index (low)Feb 18, 2023: 18 index (low)Feb 23, 2023: 32 index (low)Mar 5, 2023: 24 index (low)Mar 15, 2023: 7.5 index (low)Mar 20, 2023: 8.3 index (low)Mar 30, 2023: 15 index (low)Apr 4, 2023: 39 index (low)Apr 14, 2023: 25 index (low)Apr 19, 2023: 19 index (low)May 4, 2023: 11 index (low)May 14, 2023: 31 index (low)Jun 3, 2023: 57 index (low)Jun 8, 2023: 58 index (low)Jun 13, 2023: 89 index (low)Jun 23, 2023: 90 index (low)Jun 28, 2023: 27 index (low)Jul 8, 2023: 91 index (low)Jul 18, 2023: 16 index (low)Aug 2, 2023: 27 index (low)Aug 7, 2023: 62 index (low)Aug 17, 2023: 48 index (low)Aug 22, 2023: 37 index (low)Sep 6, 2023: 15 index (low)Sep 11, 2023: 16 index (low)Sep 16, 2023: 34 index (low)Oct 1, 2023: 17 index (low)Oct 16, 2023: 11 index (low)Oct 21, 2023: 5.3 index (low)Oct 26, 2023: 13 index (low)Oct 31, 2023: 15 index (low)Nov 5, 2023: 5.5 index (low)Nov 10, 2023: 1 index (low)Nov 25, 2023: 1.5 index (low)Nov 30, 2023: 4.5 index (low)Dec 30, 2023: 8 index (low)Jan 4, 2024: 3.5 index (low)Jan 14, 2024: 15 index (low)Jan 29, 2024: 7.5 index (low)Feb 3, 2024: 14 index (low)Feb 8, 2024: 18 index (low)Feb 23, 2024: 29 index (low)Mar 19, 2024: 10 index (low)Mar 24, 2024: 14 index (low)Mar 29, 2024: 11 index (low)Apr 13, 2024: 22 index (low)Apr 23, 2024: 22 index (low)Apr 28, 2024: 51 index (low)May 8, 2024: 62 index (low)May 28, 2024: 16 index (low)Jun 2, 2024: 84 index (low)Jun 7, 2024: 64 index (low)Jun 22, 2024: 80 index (low)Jul 22, 2024: 36 index (low)Aug 1, 2024: 31 index (low)Aug 6, 2024: 56 index (low)Aug 11, 2024: 35 index (low)Aug 16, 2024: 26 index (low)Aug 21, 2024: 23 index (low)Aug 26, 2024: 32 index (low)Sep 20, 2024: 21 index (low)Sep 30, 2024: 26 index (low)Oct 10, 2024: 15 index (low)Oct 15, 2024: 11 index (low)Oct 20, 2024: 9 index (low)Oct 25, 2024: 13 index (low)Oct 30, 2024: 21 index (low)Nov 4, 2024: 16 index (low)Nov 24, 2024: 2 index (low)Dec 4, 2024: 4.5 index (low)Dec 14, 2024: 12 index (low)Dec 19, 2024: 14 index (low)Dec 24, 2024: 7.5 index (low)Dec 29, 2024: 14 index (low)Jan 3, 2025: 6.5 index (low)Jan 8, 2025: 3 index (low)Jan 28, 2025: 5.5 index (low)Feb 2, 2025: 9 index (low)Feb 12, 2025: 9.5 index (low)Feb 17, 2025: 15 index (low)Mar 4, 2025: 24 index (low)Mar 19, 2025: 19 index (low)Mar 26, 2025: 15 index (low)Apr 8, 2025: 25 index (low)Apr 13, 2025: 11 index (low)Apr 15, 2025: 33 index (low)Apr 18, 2025: 30 index (low)Apr 28, 2025: 20 index (low)May 5, 2025: 29 index (low)May 8, 2025: 49 index (low)May 13, 2025: 39 index (low)May 18, 2025: 71 index (low)May 23, 2025: 43 index (low)Jun 2, 2025: 27 index (low)Jun 17, 2025: 79 index (low)Jun 22, 2025: 15 index (low)Jun 27, 2025: 36 index (low)Jul 7, 2025: 83 index (low)Jul 12, 2025: 58 index (low)Jul 27, 2025: 57 index (low)Aug 16, 2025: 21 index (low)Aug 21, 2025: 23 index (low)Aug 26, 2025: 26 index (low)Sep 2, 2025: 25 index (low)Sep 5, 2025: 23 index (low)Sep 10, 2025: 23 index (low)Sep 15, 2025: 21 index (low)Sep 20, 2025: 11 index (low)Sep 22, 2025: 15 index (low)Oct 10, 2025: 16 index (low)Oct 15, 2025: 9 index (low)Oct 20, 2025: 4 index (low)Oct 25, 2025: 8 index (low)Nov 1, 2025: 6 index (low)Nov 4, 2025: 2 index (low)Nov 14, 2025: 7.5 index (low)Nov 19, 2025: 5 index (low)Nov 29, 2025: 4 index (low)Dec 9, 2025: 13 index (low)Dec 11, 2025: 12 index (low)Dec 19, 2025: 6 index (low)Dec 24, 2025: 118 index (low)Dec 31, 2025: 6.5 index (low)Jan 18, 2026: 7.5 index (low)Jan 28, 2026: 5.5 index (low)Feb 2, 2026: 6.3 index (low)Feb 7, 2026: 3.5 index (low)Feb 12, 2026: 16 index (low)Feb 22, 2026: 42 index (low)Mar 4, 2026: 16 index (low)Mar 9, 2026: 11 index (low)Mar 14, 2026: 22 index (low)Mar 19, 2026: 5 index (low)Mar 24, 2026: 19 index (low)Mar 31, 2026: 33 index (low)Apr 13, 2026: 17 index (low)May 3, 2026: 21 index (low)May 23, 2026: 78 index (low)May 30, 2026: 78 index (low)Jun 19, 2026: 96 index (low)Jun 27, 2026: 42 index (low)Jul 2, 2026: 83 index (low)Jul 7, 2026: 54 index (low)Jul 17, 2026: 49 index (low)Jul 19, 2026: 68 index (low)Aug 6, 2026: 25 index (low)Aug 8, 2026: 44 index (low)Aug 11, 2026: 33 index (low)Aug 21, 2026: 27 index (low)Aug 31, 2026: 27 index (low)Sep 15, 2026: 12 index (low)Sep 17, 2026: 24 index (low)Sep 30, 2026: 17 index (low)
Algae signal (red-edge index), index. One dot per cloud-free scene; dates are local to the lake.

When it peaks

MonthClear scenesMedian, indexScenes rated high
Jan3270%
Feb30180%
Mar31170%
Apr30220%
May35420%
Jun34580%
Jul27490%
Aug38270%
Sep31210%
Oct38123%
Nov325.750%
Dec31110%

By year (median / highest): 2016: 16 / 59 (8 scenes) · 2017: 14 / 74 (21 scenes) · 2018: 19 / 87 (39 scenes) · 2019: 18 / 71 (42 scenes) · 2020: 21 / 126 (48 scenes) · 2021: 16 / 73 (35 scenes) · 2022: 21 / 105 (37 scenes) · 2023: 17 / 91 (42 scenes) · 2024: 17 / 84 (38 scenes) · 2025: 19 / 118 (49 scenes) · 2026: 24 / 96 (30 scenes).

What a satellite can and can’t tell you

Satellites see only the surface layer, only on cloud-free days, and only away from the shoreline. They estimate algae; they do not measure toxins, and they can’t see what the lake bottom is doing. A clear reading is not a safety clearance.

For current conditions and health advisories, check the Florida DEP algal bloom page and the Florida Department of Health. If a person or pet may have been exposed to a bloom, call a doctor, a veterinarian, or Poison Help at 1-800-222-1222.

Source: Sentinel-2 MSI (ESA Copernicus), Red-edge cyanobacteria index (CI-cyano); a scene counts as a bloom when the index is above 50 and stays high relative to turbidity (bloom rule v1 (2026-10)). Snapshot exported Oct 9, 2026.

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