Earth Support Corp

Caledonia CountyVermont

Waterford, Vermont

1 high-hazard dam is rated in poor or unsatisfactory condition. Bedrock sits a median 18 ft down across 426 logs, close to the Vermont median of 20 ft.

Median depth to bedrock

18 ft

middle half 7–38 ft · 426 logs

Bridges rated poor

2

of 21 inventoried

Poor high-hazard dams

1

National Inventory of Dams

Mapped landslides

11

USGS inventory points

01 · Dams & disasters

1 high-hazard dam needs work

FEMA Public Assistance is reported by county, so the figure below is Caledonia County-wide context, not a Waterford number.
High-hazard dams in poor condition in Waterford
DamConditionBuilt
Stiles PondStiles BrookPoor1877

High hazard potential means failure would probably cost lives — it rates the consequences, not the dam’s condition.

FEMA Public Assistance, Caledonia County

$38.0M

Federal share obligated across 489 projects in 12 declared disasters since 2010. The largest category is roads & bridges (76%); roads & bridges took $28.7M.
Dams, disasters & moving ground

02 · Ground

Rock turns up a median 18 ft down

From 426 depth-to-rock records inside Waterford (Vermont DEC well records). Logs cluster where people drill wells and bore for roads, so treat this as the town’s pattern, not a site answer.

Half of Waterford's logs reach rock between 7 and 38 ft

Depth to bedrock: 10th–90th percentile whisker, middle-half box, median tick; dashed line = Vermont median.
median 18 ft
VT 20 ft
0204060 ft
0204060801001201400–5 ft5–10 ft10–20 ft20–50 ft50–100 ft100+ ft
n = 426 logsSource: Vermont DEC well records
▸ Show the numbers
Depth to rock (ft)Logs
0–566
5–1067
10–2087
20–50125
50–10063
100+18

Rock within 10 ft

35%

of logs (34% across Vermont). Shallow rock means ledge in excavations, refusal for driven piles and rock anchors rather than soil nails; deep ground means taller shoring and more groundwater. 18% of logs here go past 50 ft.

Mapped landslides

11

5 earth landslide · 3 earth gully · 3 gully head. Inventory points from the USGS U.S. Landslide Inventory; many are prehistoric slides mapped from lidar.
Bedrock & soils across New EnglandDams, disasters & landslides

03 · Bridges

2 of 21 bridges are rated poor — above the Vermont rate of 4%

Every highway bridge and large culvert in the 2025 National Bridge Inventory that stands inside Waterford. Median age 44 years; 1 posted for weight.

33% good, 10% poor

FHWA good / fair / poor rating — the lowest of deck, superstructure, substructure or culvert.
  • Good7 · 33%
  • Fair12 · 57%
  • Poor2 · 10%

Structures by decade built

0510151920s1930s1970s1980s
n = 21 structuresSource: FHWA National Bridge Inventory 2025
▸ Show the numbers
BuiltStructures
1920s1
1930s2
1970s4
1980s14

The poor-rated bridges

Bridges rated poor in Waterford
CarriesOverBuiltDaily traffic
NH 18CONNECTICUT RIVER19341,508
NH 18CONNECTICUT RIVER19341,115
Every poor bridge in New England

04 · Next door

Waterford and the 6 towns that border it

A dash means no data for that layer, not zero.
Waterford compared with neighbouring towns
TownPoor bridgesRock depth
Waterford, VT2 / 2118 ft
St. Johnsbury, VT1 / 4312 ft
Barnet, VT4 / 3715 ft
Littleton, NH0 / 2718 ft
Concord, VT1 / 1428 ft
Monroe, NH0 / 325 ft
Kirby, VT0 / 118 ft

Where these numbers come from

Method, sources & caveats

Waterford is the Census county subdivision 5000577125 (Caledonia County). Every record is placed here by its coordinates, not by the place name the source uses.

  • Towns are Census county subdivisions: cities, towns, plantations, and Maine/New Hampshire unorganized territories and townships. Every record is placed in a town by its coordinates (point-in-polygon), not by the source's own place label — so a bridge in Roxbury counts for Boston and a well in 'North Waltham' counts for Waltham.
  • Bridges: FHWA NBI 2025, highway structures ≥ 20 ft including large culverts. 'Poor' is FHWA's good/fair/poor rating (lowest of deck, superstructure, substructure or culvert ≤ 4). Percent-poor is shown only for towns with at least 5 structures.
  • Depth to bedrock is the median of driller- and boring-reported depths in the town, shown only where at least 10 logs exist. Water-well logs over-sample rural lots and hilltops; one town median never describes a particular site.
  • Bedrock depths use the same state databases and filters as the Bedrock & soils module (bedrock wells and borings that reached rock, 0 < depth ≤ 400 ft, exact re-filings dropped), but every log is placed in a town by its coordinates rather than the driller's town field, so town counts can differ slightly between the two pages. Connecticut and Rhode Island have no statewide public well-log database with depths.
  • Dams: only high-hazard-potential dams whose latest condition assessment is Poor or Unsatisfactory are counted (live NID). Connecticut and Rhode Island assessments may lag.
  • FEMA Public Assistance dollars are federal share obligated for disasters declared since 2010, reported by county — they are county context, not a town figure.
  • Grant awards are Massachusetts only (EEA Dam & Seawall program, MVP Action grants, CZM Coastal Resilience). Other states' programs are not yet included.
  • Ground-related permit counts cover only the municipal portals the pipeline reads (Boston, Cambridge, Somerville, Worcester, Framingham, Providence, Portsmouth, Hartford and a few others) — an absent count means 'not covered', not zero.
Data as of
Sep 11, 2026
Generated
Sep 11, 2026
Records
367,748
Refresh
Live pull · weekly

Published by Earth Support Corp as a public resource. Regional statistics for planning and curiosity. They are not an engineering report, a bid recommendation or a statement about any particular site, firm or project. Spot an error? Tell us and we will correct it. Full method: methodology.

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