Brock Lake
Van Buren County, ArkansasView mapDirections
Arkansas DEQ publishes the water-quality measurements for Brock Lake. Here is what has been measured.
- Limited data
Brock Lake in Van Buren County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Water clarity: 2.6 ft visibility. Phosphorus: 32.5 µg/L. Chlorophyll-a (algae): 12.6 µg/L.
Brock Lake is a lake in Van Buren County, Arkansas. Overall water quality is improving over recent sampling years.
Source: EPA Water Quality Portal sampling records, ADEQ, last sampled 2014-11-19. Methodology: how these readings are compared.
What Brock Lake is good for
From access and monitoring records, not editorial picks.
- Camping1 public campground nearby
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Brock Lake is safe to swim in today is a call for the Arkansas Division of Environmental Quality and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Brock Lake
These are the measurements Arkansas DEQ publishes for Brock Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Very murky, less than 2.6 ft of visibility. Phosphorus 32.5 µg/L. Chlorophyll-a 12.6 µg/L. TSI 58.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 2.6ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | 32.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 12.6µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 58 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Brock Lake
Answers come straight from the public measurements and survey records on this page.
Recreation & Access
Public campgrounds near Brock Lake
- Brock Creek Cg2.6 km
Nearest public campgrounds in the USGS National Map inventory, within about 3 miles. An empty list means USGS records no campground that close, which is not the same as camping being unavailable. Where the source gives an official reservation link, it is used; the cabin and hotel search does not cover campsites. More camping lakes
Stays via Stay22
Stays near Brock Lake
Compare lakeside cabins, hotels, and vacation rentals near Brock Lake in Van Buren County, Arkansas — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Brock Lake
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Fishing Brock Lake
Water quality readings over time
2 seasons of samples on record (2013–2014). Calling a direction takes at least 4 years of the same measurement.
Water clarity
Stable2 years
Phosphorus
Improving-8.5 µg/L/yr2 years
Chlorophyll-a
Improving-4.7 µg/L/yr2 years
Nearby Lakes in Van Buren County
Frequently asked questions about Brock Lake
Where is Brock Lake?
- Brock Lake is a lake in Van Buren County, Arkansas. Its water-quality measurements are published by Arkansas DEQ and shown on this page as reported.
What is the water quality of Brock Lake?
- Brock Lake in Van Buren County, Arkansas has water-quality measurements published by Arkansas DEQ, shown here as reported. Water clarity: 2.6 ft visibility. Phosphorus: 32.5 µg/L. Chlorophyll-a (algae): 12.6 µg/L.
Is Brock Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Are there campgrounds on Brock Lake?
- Brock Lake has 1 public campground from USGS The National Map within 5 km, including Brock Creek Cg. This is a location join, not a booking. Cabins and hotels are listed separately; campsite reservations use the official link when the source provides one.
Explore Brock Lake across LakeQuality
4 documented falls within 23.2 mi, nearest Falling Water Falls
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Where this data comes from
35 measurements from 1 monitoring station, 2013–2014. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- USGS Arkansas Water Science Center
USGS-AR35 samples · 2013–2014
Analytical methods
- Secchi disk method
- P, wu, WCA, persulfate CF color
- Plant pigments, sonication & 445
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.
Other records on this page
Public campgrounds from USGS The National Map Structures, within about 3 miles