Diamond Lake Tournaments
Event dates and past winners on Diamond Lake.
- 1upcoming
- 0results
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DNR registrations for Diamond Lake name the launch site, sponsor, target fish and boat count; the system prints no weigh-in town, so the launch column shows the registered site.
Registrations for Diamond Lake target bass. Registered fields average 21 boats, the largest 30.
Competitive fishing dates for Diamond Lake
This page holds 18 scheduled events for Diamond Lake, counting 1 future dates, and 0 published results. Clubs registering events on Diamond Lake include S.M.A.C., Cass Bass Club and Liars Bass Fishing League. Registered launch sites: Diamond Lake Boat Access near Cassopolis.
The calendar turns next to S.M.A.C. Southwest Michigan Anglers Club (2027-06-19).
Coming registrations for Diamond Lake
| Date | Event | Registered by | Launch site | Launch county |
|---|---|---|---|---|
| 2027-06-19 | S.M.A.C. Southwest Michigan Anglers Club | S.M.A.C. | Diamond Lake Boat Access near Cassopolis | Cass County |
Michigan DNR Fishing Tournament Information System registrations and organizer pages, October 2026.
This season's finished events on Diamond Lake
| Date | Event | Registered by | Launch site | Launch county |
|---|---|---|---|---|
| 2026-10-18 | Hudson Smith Memorial Tournament | Diamond Lake Boat Access near Cassopolis | Cass County | |
| 2026-09-23 | Hudson Smith Memorial Tournament | Diamond Lake Boat Access near Cassopolis | Cass County | |
| 2026-09-05 | S.M.A.C. Southwest Michigan Anglers Club | S.M.A.C. | Diamond Lake Boat Access near Cassopolis | Cass County |
| 2026-09-02 | arjays | Diamond Lake Boat Access near Cassopolis | Cass County | |
| 2026-08-09 | Stop 10 Semi-open | Michiana Fishing League | Diamond Lake Boat Access near Cassopolis | Cass County |
| 2026-08-06 | Michiana Singles | Casting Couples | Diamond Lake Boat Access near Cassopolis | Cass County |
| 2026-07-30 | ClearH2O Tackle Thursday Night Bass Tournaments | Diamond Lake Boat Access near Cassopolis | Cass County | |
| 2026-07-29 | arjays | Diamond Lake Boat Access near Cassopolis | Cass County | |
| 2026-07-26 | Butchers Baits Sunday League | Diamond Lake Boat Access near Cassopolis | Cass County | |
| 2026-07-11 | Four Flags Bassmasters | four flags bassmasters | Diamond Lake Boat Access near Cassopolis | Cass County |
| 2026-06-25 | Livin the Dream bass tournament | Livin the Dream | Diamond Lake Boat Access near Cassopolis | Cass County |
| 2026-06-24 | arjays | Diamond Lake Boat Access near Cassopolis | Cass County | |
| 2026-06-20 | S.M.A.C. Southwest Michigan Anglers Club | S.M.A.C. | Diamond Lake Boat Access near Cassopolis | Cass County |
| 2026-06-11 | ClearH2O Tackle Thursday Night Bass Tournaments | Diamond Lake Boat Access near Cassopolis | Cass County | |
| 2026-06-10 | Liars | Liars Bass Fishing League | Diamond Lake Boat Access near Cassopolis | Cass County |
| 2026-05-25 | Cass Bass Open | Cass Bass Club | Diamond Lake Boat Access near Cassopolis | Cass County |
| 2026-05-23 | Border Battle Cup – Indiana vs Michigan – Stop 2 | Diamond Lake Boat Access near Cassopolis | Cass County |
Catch reported to the DNR from Diamond Lake events
Organizers file these totals with the DNR after an event; they show field size, fish brought to the scale and the heaviest fish, not winners.
| Date | Event | Fish | Boats | Anglers | Fish entered | Heaviest |
|---|---|---|---|---|---|---|
| 2026-09-05 | S.M.A.C. Southwest Michigan Anglers Club | Bass | 15 | 29 | 60 | |
| 2026-07-11 | Four Flags Bassmasters | Bass | 12 | 22 | 52 | 3.91 lb |
| 2026-06-20 | S.M.A.C. Southwest Michigan Anglers Club | Bass | 19 | 36 | 67 | 4.26 lb |
| 2026-06-10 | Liars | Bass | 10 | 20 | 40 | 3.16 lb |
| 2026-05-25 | Cass Bass Open | Bass | 26 | 52 | 100 | 4.09 lb |
Michigan DNR Fishing Tournament Information System, results forms submitted by organizers; retrieved October 2026.
Ramps and organizers on Diamond Lake
Ramps tournament boats use on Diamond Lake
- Diamond Lake Boat Access near Cassopolis2 lanes, 60 trailer spaces, courtesy pier, toilet, Recreation Passport, Cassopolis (18 registrations on file)
Diamond Lake organizers on file
Diamond Lake registrations by county
- Cass County
An event-day kit for Diamond Lake
Bass lures
Frogs and swimbaits
Baitcasting combos
For heavy cover
Braided line
For grass
Boat gear
Culling and livewells
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Tournament water beyond Diamond Lake
- Austin Lake19 events
- Belleville Lake19 events
- Center Lake, Jackson County10 events
- Chippewa Lake13 events
- Crooked Lake, Barry County12 events
- Devils Lake, Lenawee County9 events
- Grand River25 events
- Gull Lake22 events
- Gun Lake18 events
- Halfmoon Lake, Washtenaw County9 events
- Hardy Dam Pond27 events
- Jordan Lake37 events
- Kalamazoo Lake12 events
- Lake Cadillac14 events
- Lake Michigan10 events
- Lake Oakland17 events
- Lake Orion25 events
- Lake Ovid10 events
- Lake Ponemah16 events
- Lake St. Clair53 events
- Lakeville Lake10 events
- Magician Lake10 events
- Morrison Lake, Ionia County24 events
- Muskegon Lake38 events
- Orchard Lake, Oakland County15 events
- Paw Paw Lake, Berrien County10 events
- Pine Lake near Martin, Barry County14 events
- Pontiac Lake23 events
- Portage Lake, St. Joseph County10 events
- Spring Lake12 events
- Thornapple Lake10 events
- Union Lake, Oakland County12 events
- Wamplers Lake11 events
- White Lake near Whitehall, Muskegon County16 events
- White Lake, Oakland County17 events
- Wolverine Lake, Oakland County9 events
Michigan shorelines close to Diamond Lake, in pictures
Photo: Notorious4life ( Uploads ), CC0 1.0
Photo: Christian Collins, CC BY-SA 2.0
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Photo: NOAA Great Lakes Environmental Research Laboratory, CC BY-SA 2.0
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Photo: Marcusmax, CC BY-SA 4.0
Pictures from water close to the Diamond Lake field
Photo: Humbles Art, CC BY-SA 3.0
Photo: Andrew Jameson, CC BY-SA 4.0
Photo: Gpwitteveen, CC BY-SA 3.0
Photo: The original uploader was Triphook at English Wikipedia, CC BY-SA 3.0
Things anglers ask about events on Diamond Lake
What count of tournaments does Diamond Lake show?
18 registered on this page, 1 of them still ahead, alongside 0 published results.
What event follows today on Diamond Lake?
S.M.A.C. Southwest Michigan Anglers Club on 2027-06-19.
What scale weight has won Diamond Lake?
No winner with a printed five-bass weight is on file for this water yet; the DNR catch summaries below show what fields have weighed.
Which bass clubs hold dates on Diamond Lake?
S.M.A.C., Cass Bass Club and Liars Bass Fishing League.
Where is the registered Diamond Lake launch?
The DNR registrations name Diamond Lake Boat Access near Cassopolis as the launch.
What was the newest Diamond Lake winning bag?
Clubs on this water have not printed a winner on any page checked; the DNR catch reports show field totals instead.
Which fishing license fits a Diamond Lake tournament?
A Michigan all-species license for anyone 17 or older: $26 resident, $76 nonresident, or $10 for one day.
Where do Diamond Lake entries go?
Each row links to its MFTIS registration or the club site, which names the sponsor to contact.
Can a Diamond Lake date be added by a club?
Clubs submit dates with the Add a tournament button.
Put practice hours on Diamond Lake
Species, ramps and rules are one click away on the water page.
Know a tournament that is not listed?
Send it here with a link to the organizer’s event page or schedule. Weekly and monthly ones only need to go in once. If that page shows the name and the date (or the day of the week), it goes on this page right away. If not, we check it by hand within a week.
We keep what you send so we can check the event. Your email is never published.