Splitrock Reservoir
Morris County, New Jersey554 acresView mapDirections
No nutrient or algae sampling on record from NJDEP for this lake.
- Impaired · Impaired biota (cause unknown)
Splitrock Reservoir in Morris County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Surface area: 554 acres.
Splitrock Reservoir is a 554-acre lake in Morris County, New Jersey.
Source: EPA Water Quality Portal sampling records, your state environmental agency. Methodology: how these readings are compared.
Swimming conditions
No readingBacteria advisory
Nutrient and algae readings are not a swimming clearance. Splitrock Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury, metals (other than mercury), pathogens (E. coli, fecal). Check local advisories before you swim.
Whether Splitrock Reservoir is safe to swim in today is a call for the New Jersey Department of Environmental Protection and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Splitrock Reservoir
These are the measurements NJDEP publishes for Splitrock Reservoir, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
No clarity data. TSI undefined.
Ask about Splitrock Reservoir
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
554 acres
Shoreline
9 mi
No bathymetric survey has been published for Splitrock Reservoir, so its depth is not documented here.
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Stays near Splitrock Reservoir
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Fishing Splitrock Reservoir
EPA Impairment Status
Splitrock Reservoir is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Designated uses not supporting: Drinking water, Aquatic life, Fish consumption, Recreation.
A Total Maximum Daily Load (TMDL) plan has been approved.
Source: EPA ATTAINS assessment unit NJ02030103030110-01 · Official waterbody report
Nearby Lakes in Morris County
Frequently asked questions about Splitrock Reservoir
Where is Splitrock Reservoir?
- Splitrock Reservoir is a lake in Morris County, New Jersey. Its water-quality measurements are published by NJDEP and shown on this page as reported.
What is the water quality of Splitrock Reservoir?
- Splitrock Reservoir in Morris County, New Jersey has water-quality measurements published by NJDEP, shown here as reported. Surface area: 554 acres.
Is Splitrock Reservoir safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Splitrock Reservoir is listed impaired under Clean Water Act §303(d) (IR 5) for impaired biota (cause unknown), mercury, metals (other than mercury), pathogens (E. coli, fecal). Check local advisories before you swim.
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Where this data comes from
Measurements for Splitrock Reservoir come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.
Other records on this page
Impairment status from EPA ATTAINS 303(d) database