51,002 companies ranked3,437,403 Google reviews analyzedPulled from the top 100 US cities (adding more)0 paid placementsData updated Oct 31, 2026How we rank

Hydro Dynamics Corporation

474Ranked #474 of 731 in the St. Louis, MO-IL area ▲ 25 since Oct 31, 2026

4.5(152)Score 63.9 / 10071st most reviewedOlivette, MO
What we checked

No company can pay for its position. Sponsor blocks are labeled. How we rank

Why it ranks #474

Review quality43.8 / 65
Review volume20.1 / 35

Weighted rating 4.51 (its 4.5 Google rating, pulled toward the area average until it has many reviews). Volume is 152 reviews on a log scale against the most reviewed company in the area (6,236). The full method

Where it ranks in St. Louis: every ranked company's score
050100
Rank history (2 updates)

At a glance

Address
9211 Olive Blvd, Olivette, MO 63132
Phone
(314) 997-0064
Website
hydrodynamicscorp.com
Weekdays
8 AM to 4 PM
Saturday
Closed

Services

Lawn careDrainageIrrigation and sprinklersLandscape lightingHardscaping and patios

From the categories Hydro Dynamics Corporation lists on Google: Lawn care service, Drainage service, Irrigation equipment supplier, Landscape lighting designer, Landscaper, Lawn sprinkler system contractor, Lawn irrigation equipment supplier, Lighting contractor, Paving contractor.

Review signals

We have not read review dates for Hydro Dynamics Corporation yet. Its Google rating and review count are above.

We show dates and counts we computed, never the review text. Read the reviews on Google

Compare to the top 3 in St. Louis

CompanyRankScoreRating
Craig's Tree Service LLC#788.05.0 (349)
Pro Outdoor#987.94.9 (886)
Outdoor Professional Services#1087.75.0 (324)
Hydro Dynamics Corporation#47463.94.5 (152)
The full St. Louis ranking

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Ratings and review counts: Google Maps, read Oct 31, 2026. Data updated Nov 3, 2026. Something wrong? Correct this listing. Corrections