Aquilla Reservoir Raw Water Intake
Hill County, TexasView mapDirections
Not Rated: one monitoring station are on record, but they measured water clarity only. LakeQuality’s A–F method grades total phosphorus, total nitrogen, chlorophyll-a, and turbidity; clarity is shown, not scored.
- Limited data
Aquilla Reservoir Raw Water Intake in Hill County, Texas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2 ft visibility.
- Clarity
- 2 ft
- Trend
- ↓ Declining
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Why Aquilla Reservoir Raw Water Intake has no grade
Aquilla Reservoir Raw Water Intake has monitoring on record from one station, but only water clarity was measured. LakeQuality’s A–F letter uses total phosphorus, total nitrogen, chlorophyll-a, and turbidity against EPA National Lakes Assessment condition classes. With none of those grading measurements on record, Aquilla Reservoir Raw Water Intake is Not Rated — not an F. Its 2-foot median from 10 readings collected 2020–2026 is still shown as clarity, but clarity alone cannot earn a letter.
Not Rated is EPA Integrated Reporting Category 3 — insufficient information. Everything below that has been measured is still reported on this page.
Sampling is run by TCEQ and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Aquilla Reservoir Raw Water Intake is a lake in Hill County, Texas. Overall water quality is declining over recent sampling years.
Source: EPA Water Quality Portal sampling records, TCEQ, last sampled 2026-02-03. Grade methodology: LakeQuality methodology.
Swimming Safety
Not ratedLimited data
The letter is not a swimming clearance. Check local advisories before you swim.
Water quality measurements for Aquilla Reservoir Raw Water Intake
These readings exist but are not enough for an A–F grade — see why.
Very murky, less than 2 ft of visibility. TSI 67.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 67 | Eutrophic |
High nutrients, frequent algae, reduced clarity
→ Aquilla Reservoir Raw Water Intake water level: the live USGS gauge reading
Fishing Aquilla Reservoir Raw Water Intake
Water Quality Trend: ↓ Declining
Based on 5 years of monitoring data (2020-2025).
| Metric | Trend | Change/Year | Years |
|---|---|---|---|
| Water Clarity | ↓ Declining | -0.061 m/yr | 5 |
| Phosphorus | ↓ Declining | +6 µg/L/yr | 4 |
| Chlorophyll-a | ↓ Declining | +10.35 µg/L/yr | 4 |
Graded lakes near Aquilla Reservoir Raw Water Intake
Aquilla Reservoir Raw Water Intake has no grade, but these lakes within a short drive do.
Nearby Lakes in Hill County
Frequently asked questions about Aquilla Reservoir Raw Water Intake
Where is Aquilla Reservoir Raw Water Intake?
- Aquilla Reservoir Raw Water Intake is a lake in Hill County, Texas. LakeQuality has not rated this lake (UNRATED) — the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity.
What is the water quality grade for Aquilla Reservoir Raw Water Intake?
- Aquilla Reservoir Raw Water Intake in Hill County, Texas is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 2 ft visibility.
Is Aquilla Reservoir Raw Water Intake safe to swim in?
- The letter is not a swimming clearance. Check local advisories before you swim.
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Where this data comes from
10 measurements from 1 monitoring station, 2020–2026. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Texas Commission on Environmental Quality
TCEQMAIN10 samples · 2020–2026
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.