Table S4.
Lake and reservoir OC burial by two-digit HUC
| Two-digit HUC | Lake area, km2 | Lake/reservoir sedimentation flux, TgC⋅y−1 |
| 01 | 6,006 | 0.5 (0.3–0.9) |
| 02 | 3,903 | 0.4 (0.2–1) |
| 03 | 15,828 | 3.1 (1.2–11.7) |
| 04 | 7,798 | 0.6 (0.3–1.5) |
| 05 | 3,432 | 0.5 (0.3–0.9) |
| 06 | 2,679 | 0.4 (0.2–0.6) |
| 07 | 11,081 | 0.9 (0.5–2.2) |
| 08 | 10,778 | 5.4 (1.3–25.4) |
| 09 | 7,336 | 0.4 (0.1–1) |
| 10 | 15,196 | 1.8 (1–3.6) |
| 11 | 8,357 | 1.2 (0.7–2.9) |
| 12 | 8,793 | 1.9 (0.8–7.1) |
| 13 | 1,076 | 0.2 (0.1–0.3) |
| 14 | 1,782 | 0.3 (0.2–0.5) |
| 15 | 1,377 | 0.3 (0.2–0.5) |
| 16 | 7,960 | 0.6 (0.3–1.3) |
| 17 Coast | 1,133 | 0.2 (0.1–0.4) |
| 17 Dry | 6,159 | 1 (0.7–1.5) |
| 18 Dry | 5,951 | 0.9 (0.5–1.8) |
| Total | 126,793 | 20.6 (9–65.1) |
Lake surface area was determined by the NHD by HUC. Total carbon flux is calculated according to Huang et al. (37). Errors in parentheses represent the range of 1 SD from the mean. Sedimentation is considered a negative flux.