Shamrock Impoundment Lake
Houston County, Minnesota - DNR stocking history, depth and survey data
Minnesota · Minnesota Department of Natural Resources (DNR) · DOW 28003200
DNR records show 1 stocking entry at Shamrock Impoundment Lake since 2017, most recently brown trout yearlings in 2017 (5 fish).
- Shamrock Impoundment Lake has 1 DNR stocking record across 1 year (2017-2017): brown trout (1).
- The most-stocked species by count is brown trout: 5 fish on record.
- Maximum depth 15 ft; surface area 9 acres, 9 littoral acres, 0.6 miles of shoreline, per the DNR lake survey.
- Average water clarity (Secchi depth) 7.0 ft.
- Fish species DNR lists here: black crappie, bluegill, largemouth bass, northern pike.
- 1 public access on the DNR list.
- Most recent DNR fish survey: (standard survey).
- Houston County, nearest town Caledonia; DNR lake number (DOW) 28003200.
Stocking history
| Year | Species | Size | Number | Pounds |
|---|---|---|---|---|
| 2017 | Brown Trout | yearlings | 5 | 1.8 |
Public accesses
| Type | Owner | Where |
|---|---|---|
| O | UKN | Access drops off of impoundment dike. - STATE-OWNED ROAD ~TRAIL~ ENDS AT PARKING AREA THEN WALK 600 FT. TO LAKE. NO OUTBOARD MOTORS ALLOWED. |
DNR fish survey, 2008
| Species | Gear | Catch per net | Total catch | Avg lb |
|---|---|---|---|---|
| Bluegill | Standard trap nets | 160.00 | 800 | 0.04 |
| Black crappie | Standard trap nets | 48.80 | 244 | 0.20 |
| Northern pike | Standard trap nets | 0.40 | 2 | 12.76 |
| Largemouth bass | Standard electrofishing | 70.80 | 59 | 1.41 |
| Northern pike | Standard electrofishing | 2.40 | 2 | 7.26 |
Catch per net (CPUE) is the DNR survey's count per gill net or trap net set; higher means more of that species were sampled, not a fishing forecast. Top species per gear shown; where we have no verified common name for a DNR code, the code itself is shown.
A lake population assessment was completed on Shamrock Lake in July of 2008 as directed by the Operational Planning portion of the 2001 Lake Management Plan. The Operational Plan had listed 2005 as the next assessment date, but due to the increased workload of the Lanesboro Office the assessment was postponed until 2008. The impoundment was sampled with five standard trap-net sets that were set on July 16, 2008 and lifted the following day. Largemouth bass and northern pike populations were sampled during the day with an electrofishing boat on September 4, 2008. Black crappie and bluegill dominated the fish community in Shamrock Lake in 2008 and have dominated the trap net catch in every assessment dating back to 1986. The abundance of both black crappie and bluegills has increased dramatically since the 2000 assessment. However, average size has declined slightly for bluegills and to a much greater degree for black crappies. Abundance of both species far exceeds the 75% quartile for Lake Class 42. Mean weight however falls below the 50% quartile for lakes of similar type. Northern pike were also sampled in the trap nets and with electrofishing gear and their numbers were low, as has been historically the case, with trophy size fish present. Largemouth bass catch per effort (CPE) also increased dramatically since 2000 and is at the highest level since 1986. The average size of the bass collected in 2008 also increased from 2000 and is the largest average weight for largemouth bass ever collected in Shamrock Lake. One young-of-year largemouth was also captured while completing the shoreline electrofishing station.
Minnesota DNR survey narrative, .
All Minnesota stockings · every Minnesota lake with a page · state CSV · this lake on DNR LakeFinder
Hear when the states we cover post stockings
One email a week in season: which waters in the states we cover were stocked, straight from the state agencies' own postings. No spam, no fishing-gear ads in the mail.
Free · double opt-in · unsubscribe anytime · we store only your email.