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0–25 ft · VA🚗 Directions
Great Dismal Swamp National Wildlife Refuge — 112,000 acres straddling the VA-NC line. Atlantic white cedar, bald cypress, tupelo, red maple, and loblolly pine over peat soils. Lake Drummond at the center. Unique "pocosin" wetland ecology with Atlantic white cedar stands — a southern-appalachian species reaching its eastern limit here. Oyster mushroom year-round on dying cedars and tupelo; chicken-of-the-woods on water oak; summer chanterelles on drier hummocks.
Updated Jul 13, 4:20 AM MT
# Great Dismal Swamp NWR – S Tier | 2026-07-13 The swamp is firing across the board: sustained warm soil (76°F), two weeks of steady moisture (3.49" over 14 days), and zero drought stress have triggered a rare polyculture flush. Oysters, chanterelles, and Chicken dominate the edible tier; stinkhorns are prolific but low-value. Indigo Milk Caps are the sleeper here—flush fruiting in peak season swamp conditions like this is brief. The moderate desiccation risk is your only clock: mid-July heat will dry the organic layer faster than the recent rain replenishes it. You're looking at a 5–7 day window before moisture stress kicks in and the secondary flush collapses. Watch the next 48 hours for peak Chicken and chanterelle fruit bodies—they'll mass-produce before the heat climbs. By day 5–6, pivots to shade-dependent species (Oyster) and depth-feeders (Indigo). **Hot tip:** Target the swamp's deeper basin edges where seepage keeps soil ≥28% VWC even as uplands desiccate—that's where your Indigo flushes will extend beyond the general decline.
Generated by Claude (Anthropic) from the structured weather, soil, and phenology data on this page. The LLM can misread edge cases — treat this as a starting hypothesis, not a guarantee. Always verify conditions on the ground before committing to a long drive.
Precip 7d
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⚠ Road Access Notice
Always verify road access is public before following GPS directions to mountain areas. Many forest roads are seasonal, gated, or require 4WD. Dispersed camping follows USFS/BLM rules (typically 14-day limit). Check ranger district offices for current road and campground conditions.
2.31"
PRISM 4km · thru 07-11
Precip 14d
Observed precipitation from PRISM 4km gridded analysis, sampled at the region centroid through 2026-07-11. Used when no SNOTEL/SCAN station is mapped to this region.3.49"
PRISM 4km · thru 07-11
Soil Temp
76°F
SWE
Snow Water Equivalent — how much water is in the snowpack vs. normal. Declining SWE means snowmelt is adding moisture to the soil.0%
Drought
None
Snowmelt
complete
All conditions met (soil 76°F, sustained 7/7 days above threshold, today 0.32 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 76°F, sustained 7/7 days above threshold, today 0.32 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 76°F, sustained 7/7 days above threshold, today 0.32 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 76°F, sustained 7/7 days above threshold, today 0.32 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 76°F, sustained 7/7 days above threshold, today 0.32 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 76°F, sustained 7/7 days above threshold, today 0.32 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 76°F, sustained 7/7 days above threshold, today 0.32 VWC, 7d avg 0.30 — moisture sustained)
All conditions met (soil 76°F, sustained 7/7 days above threshold, today 0.32 VWC, 7d avg 0.30 — moisture sustained)
Primordia readiness: Cold = mycelium dormant. Activating = soil warming, primordia building. Primed = 5+ sustained warm days at species threshold; fruiting imminent if moisture cooperates. Based on Schmidt 1983 / Mihail 2007.