China Pond
Putnam County, WisconsinLimited DataOligotrophic
China Pond is a 45-acre cold, clear oligotrophic lake in Putnam County, NY. Water quality is graded A based on 1 sampling years through 2020. Compared to the 12 other monitored lakes in Putnam County, China Pond ranks #1 for water quality.
Source: EPA Water Quality Portal sampling records, local state DNR records, last sampled 2020-09-26. Grade methodology: LakeGrade methodology.
Swimming Safety
Excellent for swimming, crystal clear water with minimal algae
Water Quality Grade: A, Excellent
Crystal clear, you can see 15.2 ft down. Trophic State Index: 38.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 15.2 ft | A |
| Phosphorus | No data | |
| Chlorophyll-a (Algae) | No data | |
| Trophic State Index (TSI) | 38 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Lake Details
| Characteristic | Value |
|---|---|
| Surface Area | 45 acres |
Location
County Ranking
Ranked #1 of 13 lakes in Putnam County
Nearby Lakes in Putnam County
More Wisconsin Lake Rankings
Other Grade A Lakes in Wisconsin
Oligotrophic Lakes in Wisconsin
Reservoir Info (USACE NID)
China Pond is a man-made reservoir impounded by the China Pond Dam (completed 1927), built primarily for recreation on the TR-W BRANCH CROTON RIVER; concrete-type dam, 13 ft tall and 5 ft long.
- Surface area
- 45 ac
- Normal storage
- 150 ac-ft
- Max storage
- 195 ac-ft
- Hazard class
- Low
- Owner
- LAWRENCE PIAZZA
Source: USACE National Inventory of Dams, NID ID NY01069 · Operator website
EPA Impairment Status
China Pond is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 4A).
Causes of impairment
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NY1302-0045 · Official waterbody report · Matched by proximity (2.04 km)
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Grading methodology based on Metropolitan Council standards
Most recent sample: 2020-09-26
Monitoring stations: 1