A Seaside Labs Division

Real-time water quality monitoring for every coastline

Most coastal communities have zero continuous water quality data. We're changing that — starting with a low-cost prototype to prove the concept, then scaling to permanent EPA-grade stations with grant funding.

Your town probably has no real-time water data

Professional water quality monitoring stations cost $10,000 to $50,000 per site. Most coastal communities can't afford them. Instead, they rely on volunteer programs that sample once a week — missing the worst events entirely.

Buzzards Bay has over 300 miles of coastline. Harmful algal blooms, nitrogen loading, and low-oxygen events threaten shellfish beds, swimming beaches, and marine life. Weekly sampling catches some of it. Continuous monitoring catches all of it.

Recent research on Buzzards Bay proved that continuous sensors on dock-mounted platforms revealed critical low-oxygen events that weekly volunteer monitors were completely missing — events happening between sampling days and in the early morning hours.

What TideClaw monitors

  • Dissolved oxygen — the #1 indicator of ecosystem health. Crashes signal blooms, nutrient overload, and fish kills
  • pH levels — shifts reveal active photosynthesis from algal blooms and acidification trends
  • Temperature — warm water drives bloom growth. Critical for predictive early warning
  • Turbidity — water clarity drops when blooms are dense. Secchi depth replacement
  • 15-minute intervals — continuous data, not weekly snapshots
  • Algal bloom detection — our sensor suite provides early warning indicators for harmful algal blooms through DO, pH, and turbidity pattern analysis

Prototype to prove it. Grants to fund it. Professional equipment to make it permanent.

We don't ask communities to gamble on unproven technology. We prove TideClaw works with a low-cost prototype, then use that data to secure grant funding for permanent, professional-grade monitoring stations.

Step 1 — Prove the Concept

DIY Prototype Buoy

~$400
per buoy, all-in
  • ESP32 + LTE cellular modem with GPS
  • 4 sensors: pH, dissolved oxygen, temperature, turbidity
  • Solar powered with 2-3 day battery backup
  • Waterproof enclosure with PVC sensor arm
  • Real-time data to public dashboard
  • 90 days of data = grant application ready

The prototype is the bridge. The professional station is the goal. A single state grant covers multiple permanent sites.

Early warning for harmful algal blooms

Harmful algal blooms (HABs) are a growing threat to Buzzards Bay and coastal communities across New England. Warming waters, nutrient runoff, and aging septic systems are making blooms more frequent and more toxic. Towns need earlier detection — not advisories posted days after a bloom is visible.

TideClaw's continuous monitoring provides early warning through multiple bloom indicators: dissolved oxygen swings (spikes during photosynthesis, crashes overnight), pH elevation from active bloom metabolism, and turbidity increases as blooms grow dense. These patterns can signal a developing bloom days before it becomes visible.

For permanent stations (Step 2), the In-Situ Aqua TROLL 600 supports chlorophyll-a and phycocyanin sensor ports — providing direct measurement of algal biomass and toxic cyanobacteria specifically.

Step 1: The proof-of-concept buoy

Each prototype buoy is designed for deployment in New England coastal waters using off-the-shelf components.

ESP32 + LTE
Microcontroller
LILYGO board with cellular modem, GPS, solar charging built in
4 Sensors
Water Quality
pH, dissolved oxygen (fluorescence), temperature, turbidity
15 min
Reading Interval
Configurable from 1 min to 1 hour
Solar
Power Source
6W panel + 18650 battery bank, 2-3 day backup without sun
~$400
Prototype Cost
Complete BOM including enclosure, solar, cellular, and calibration supplies
$70-120
Annual Operating
Calibration supplies, probe replacement, battery replacement per year

Swifts Beach, Wareham MA

Our first planned deployment targets Swifts Beach on Buzzards Bay — a community directly affected by water quality changes and harmful algal blooms. The pilot will collect 90 days of continuous data to demonstrate the platform and support grant applications for permanent stations.

Pilot Plan

One prototype buoy deployed at Swifts Beach to validate sensor accuracy against existing monitoring data. Successful validation leads to additional buoys and partnership with local environmental organizations for scientific review.

Location
Swifts Beach, Wareham
Phase 1
1 prototype buoy
Bay
Buzzards Bay
Goal
90 days of data

Grant-funded from prototype to permanent

Multiple federal, state, and regional grant programs fund water quality monitoring projects in our region. A single grant award can cover multiple permanent monitoring stations.

MassDEP Water Quality Monitoring

$20-75K · No match required (recent cycles)

SNEP Watershed Grants

Up to $500K · Southeast New England Program

Buzzards Bay NEP Mini-Grants

Up to $50K · 33% match (in-kind OK)

CWA Section 319

$50-200K · 40% match (waivers may apply)

MA Coastal Habitat & Water Quality

Up to $175K · 25% match

The math works

One MassDEP award ($20-75K) at $7,400 per station = 3 to 10 permanent monitoring sites fully funded.

The ~$400 prototype proves the concept. The grant pays for the permanent infrastructure.

Grant opportunities identified through public program research. Application windows, eligibility, and match requirements vary by program year.

Built to last beyond the grant

TideClaw is designed as a self-sustaining monitoring network. Each deployment shares infrastructure with local connectivity services, creating ongoing value that funds continued operation after initial grant funding ends. One investment creates a permanent community resource — not a one-time study that goes dark when funding runs out.

Our approach complements existing monitoring programs like the Buzzards Bay Coalition's Baywatchers — adding continuous, real-time data between periodic manual sampling events. More data points, faster detection, better protection.

Working with the people who know these waters

TideClaw is designed to complement existing monitoring programs, not replace them. We're seeking partnerships with the organizations that have protected Buzzards Bay for decades.

Buzzards Bay Coalition · Buzzards Bay National Estuary Program · SBIA · Town of Wareham

Interested in TideClaw for your community?

Whether you're a municipal leader, environmental organization, or grant program — we'd love to talk about bringing real-time water quality monitoring to your coastline.

Get in Touch