Chariton County, Missouri · Water Quality Report Card
Marceline City Lake New
Marceline City Lake New in Chariton County, Missouri has a water quality grade of C (Fair). Water clarity: 3.5 ft visibility. Phosphorus: 45.7 µg/L. Chlorophyll-a (algae): 15.6 µg/L.
- Clarity
- 3.5 ft
- Mean depth
- ~12 ft est.
- Type
- Eutrophic
- Trend
- ↓ Declining
Marceline City Lake New is a productive, nutrient-rich eutrophic lake in Chariton County, Missouri with an estimated average depth of about 12 feet. Water quality is graded C based on 2 sampling years through 2024. Overall water quality is declining over recent sampling years. Compared to the 2 other monitored lakes in Chariton County, Marceline City Lake New ranks #2 for water quality.
Source: EPA Water Quality Portal sampling records, Missouri DNR, last sampled 2024-09-10. Grade methodology: LakeGrade methodology.
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Swimming Safety
Swim with caution, moderate algae may be present
Water Quality Grade: C (Fair)
Murky, only visible to about 3.5 ft. Phosphorus level: 45.7 µg/L. Chlorophyll-a: 15.6 µg/L. Trophic State Index: 59.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 3.5 ft | |
| Phosphorus | 45.7 µg/L | Fair |
| Chlorophyll-a (Algae) | 15.6 µg/L | Fair |
| Trophic State Index (TSI) | 59 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Lake Details
| Characteristic | Value |
|---|---|
| Average Depth | ~12 ft est. |
Depth marked “est.” is a modeled estimate from HydroLAKES, not a measured survey. Missouri has not published bathymetry for Marceline City Lake New.
Where to stay near Marceline City Lake New
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Fishing Marceline City Lake New
Water Quality Trend: ↓ Declining
Based on 3 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.12 m/yr | 2 |
| Phosphorus | ↓ Declining | +3.2 µg/L/yr | 3 |
| Chlorophyll-a | ↓ Declining | +2.3 µg/L/yr | 3 |
Location
County Ranking
Ranked #2 of 3 lakes in Chariton County
Cleaner Lakes Within 30 Miles
Marceline City Lake New holds Grade C. 2 nearby lakes hold higher grades.
- ALake Nehai TonkayeaChariton County · 7.5 mi · Two grade letters higher (C → A)
- ABrookfield LakeLinn County · 9.4 mi · Two grade letters higher (C → A)
Nearby Lakes in Chariton County
Explore Marceline City Lake New across LakeGrade
More Missouri Lake Rankings
Other Grade C Lakes in Missouri
Eutrophic Lakes in Missouri
More records, surveys & data sources
EPA Impairment Status
Marceline City Lake New is officially listed as impaired under Clean Water Act §303(d) in the 2022 EPA reporting cycle (IR category 5).
Causes of impairment
Source: EPA ATTAINS assessment unit MO_7136.00 · Official waterbody report · Matched by proximity (0.77 km)
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS). Mean depth here is modelled, not surveyed — HydroLAKES v1.0 estimates lake depth from surrounding terrain rather than from soundings. Treat it as an approximation, and prefer a state bathymetric survey where one exists.
Where this data comes from
43 measurements from 2 monitoring stations, 2022–2024. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Univ. of Missouri, Columbia
UMC40 samples · 2022–2024 - Missouri Dept. of Natural Resources
MDNR3 samples · 2023
Analytical methods
- Depth, Secchi disk in meters
- 4500 P E ~ Phosphorus in Water by Colorimetry- Ascorbic Acid Method
- 445.0 ~ EPA; Chlorophyll and Pheophytin in Algae by Fluorescence
- Nitrogen and Phosphorus, Total, Whole-water, Alkaline Persulfate Digest
Monitoring station identifiers (2)
Grade thresholds come from the U.S. EPA National Lakes Assessment 2022 Technical Support Document (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated.
Data Sources
Water quality data from the EPA Water Quality Portal
Impairment status from EPA ATTAINS 303(d) database
Lake size & watershed from HydroLAKES (HydroSHEDS)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2024-09-10
Monitoring stations: 2