2.48-acre industrial lot near Rio Dell, Humboldt County
550 Northwestern Av, Rio Dell, CA · Parcel 205-111-040-000
County file October 2026
At a glance
- BuildZoning Industrial/Commercial: rules not on file
- GroundSoils very limited for septic
- AccessFronts a public road
- ValueAssessed value not on file · no priced sale on file (as of Oct 2026)
- Acres2.48
- Land typeVacancy not verifiedNo building found, October 2026
- ZoningIndustrial/CommercialLight industrial (state class)
- Future land useIndustrial/CommercialIndustrial (state class)
- Flood zoneA · 1% annual flood risk
- WetlandsNone mappedNational Wetlands Inventory
- Assessed value (county)No assessed value in the county file we use (as of Oct 2026)Humboldt County's open parcel layer publishes no assessed values
- Last saleNo priced sale on file (as of Oct 2026)We have no sale-price file for Humboldt County yet
- Road accessHas road accessRoads: US Census TIGER/Line 2026 roads, Oct 2026
- Road frontage923 ft on Northwestern AveRoad map name; the county roll's address reads Northwestern Av
- BuildingNone on the roll
- Who zones itInside the City of Rio Dell limits; Rio Dell sets the zoning
- Zoned byRio Dell
Land facts
From public records and official maps, each with its source and date.
- Section, township, rangeSection 36, Township 2 North, Range 1 West, Humboldt MeridianBLM PLSS (CadNSDI), at the parcel's center · Oct 2026
- Septic (soils)Very limitedUSDA NRCS soil survey (SSURGO), septic absorption fields · Oct 2026. Inside the City of Rio Dell limits: a soil rating, not a sewer check; ask the city whether a sewer main serves the lot
- Ground elevationAbout 77–84 ft above sea level; average slope 2.9%USGS 3DEP 1/3 arc-second (about 10 m), NAVD88; about ±1–2 ft · Oct 2026
- HighwaysRedwood Hwy is 105 ft away and Redwood Hwy interchange is 4.1 mi away, in a straight lineUS Census TIGER/Line 2026 roads · Oct 2026
Services and surroundings
What serves the area around this parcel, from federal and state maps. Area facts, not a survey of the lot.
- Traffic countAbout 13,700 vehicles a daythe frontage road: the 2024 average daily count for the road segment, not the driveway. Federal Highway Administration counts, 2024.
- Well depth nearbyMedian 75 ft (middle half 70–96 ft)From 15 household well logs within 1 mi, drilled 1956–2025. Area figures, not this parcel. California DWR well completion reports.
- Public land nearbyMemorial Park, 1.7 miCity land, open to the public. 3,752 acres. Being nearby does not give access or hunting rights. USGS protected areas map (PAD-US 4.1).
School district
Public federal records, each with its source and date.
- School districtFortuna Elementary School District (grades pre-K–8); Fortuna Union High School District (grades 9–12)NCES EDGE school district boundaries, school year 2024–25 (Census TIGER 2025 lines), released Mar 2026. A district, not an assigned school
District details at NCES: Fortuna Elementary School District, Fortuna Union High School District
Utility service areas
Public service-area maps, each with its source and date. An area, not a connection at this parcel.
- Electric service areaInside the service area of Pacific Gas & Electric Co. (approximate)Investor-owned utility · HIFLD electric retail service territories, frozen 2025 copy, edited Aug 2025; approximate, confirm with the utility.
Environmental records
Public state and federal lists, each with its agency and date. Distances are from the parcel's map point; a record is not a finding about this parcel.
- Red flags7 environmental lists checked · Water Board cases opened after January 2023 not checkedGroundwork check of public lists: U.S. EPA, as of Oct 2026; California Department of Conservation, Geologic Energy Management Division (CalGEM), as of Oct 15, 2026; U.S. Fish and Wildlife Service, as of Aug 31, 2026; USGS Gap Analysis Project, as of 2025; California Department of Toxic Substances Control (DTSC), as of Oct 17, 2026; California State Water Resources Control Board, as of Jan 26, 2023
- Oil and gas wellsNone within 1/4 mi of the parcel's map pointGroundwork check of public lists: California Department of Conservation, Geologic Energy Management Division (CalGEM), as of Oct 15, 2026
Mapped ground hazards
State and federal geologic and well maps, each with its agency and date. Distances are from the parcel's map point; a mapped area is not a finding about this parcel.
- Young faults (USGS)None mapped within 1 miUSGS: Quaternary Fault and Fold Database (historic and latest-Quaternary faults), read Oct 2026. USGS Quaternary Fault and Fold Database traces, mapped at 1:24,000 to 1:250,000; positions approximate. Not a state fault-zone (Alquist-Priolo) determination
Free account: 25 parcel cards a day on the map, with watches and a saved search
Rio DellParcels, flood and zoning170vacant-coded on the roll, not verified11%in a FEMA flood zone1,353parcels on the rollProperty tax
California Constitution art. XIII A (Prop 13) and the county assessment roll · 2026
- Tax rate
- About 1% of assessed value plus local voter-approved rates
- If you buy
- About 1% of the price you pay each year, plus local voter-approved ratesProp 13 resets the assessed value to the purchase price at a sale
How we compute this
Pay or check a bill at the Humboldt County Treasurer-Tax Collector.
Due dates
Who decides
- City or countyInside the City of Rio Dell's limitsThe City of Rio Dell sets zoning, ADU and SB 9 rules.California Department of Technology city boundaries · Sep 21, 2026
Assessed value (Prop 13)
- Humboldt County's open parcel layer publishes no assessed values. We don't have tested sale data for this county, so we don't show a price estimate.Humboldt County GIS (Planning and Building Department)
Zoning
- Industrial/Commercial (Rio Dell's own code), state class “Light Industrial”. As of 2013, collected from Pdf. Verify with Rio Dell: the state's classes are generalized.LCI California Zoning (New Classes), release Jan 15, 2026 · 2013
- General planIndustrial/Commercial (Rio Dell's own designation), state class “Industrial”. As of 2013.LCI California General Plan Land Use · 2013
Housing
- SB 35 / SB 423 streamliningCheck HCD's current determination for Rio Dell: the only map layer HCD publishes is its June 2023 determination, HCD has determined again since (June 2025), and under SB 423 a city or county without a compliant housing element must streamline projects with 10% affordable units. A possible streamlined site is not evaluated here.HCD SB 35 / SB 423 determinations · Jun 23, 2023 · Official map
- Opportunity mapCTCAC/HCD opportunity area: Moderate Resource (used for tax-credit housing).CTCAC/HCD Opportunity Map 2026 · 2025-12
Fire
- Fire Hazard Severity ZoneIn a mapped High Fire Hazard Severity Zone (CAL FIRE Fire Hazard Severity Zone map, Local Responsibility Area, dated Mar 24, 2025). Local Responsibility Area maps take effect when the city or county adopts them by ordinance, and the adopted map can differ from CAL FIRE's; check with the City of Rio Dell.CAL FIRE Fire Hazard Severity Zones · SRA Apr 1, 2024; LRA Mar 24, 2025 · Official map
Groundwater
- Groundwater basin: EEL RIVER VALLEY (1-010); SGMA priority Medium; groundwater agency: County of Humboldt GSA.DWR Bulletin 118 (2025), SGMA basin priority (2019), Groundwater Sustainability Agencies · B118 2025; SGMA priority 2019; GSA layer read Oct 11, 2026 · Official map
Check before you buy
- Earthquake fault zone (Alquist-Priolo)Check the California Geological Survey's official Earthquake Zones of Required Investigation map.Official map
- Liquefaction / landslide zoneCheck the California Geological Survey's official Earthquake Zones of Required Investigation map. Many areas have not been evaluated by the state.Official map
- Conservation easementNone in PAD-US 4.1 easements (USGS Gap Analysis Project, as of 2025) at this parcel's map point. PAD-US does not carry every easement or habitat plan: check CCED and the city or county too.USGS Gap Analysis Project · 2025 · Official map
- Historic propertyCheck with the City of Rio Dell: no statewide layer lists historic landmarks and districts.No statewide layer
- Tenants and rent controlCheck with the City of Rio Dell: tenancy and rent control are not in any public map.Not in public data
Owner: on the county assessment roll (not shown here). Request removal
Data: Humboldt County GIS (Planning and Building Department)
Governor's Office of Land Use and Climate Innovation (LCI), California Zoning (New Classes). Zoning from the State of California's statewide zoning layer, provided as a public service for informational purposes only; it is not legal advice. Each jurisdiction's own zoning map governs.
Governor's Office of Land Use and Climate Innovation (LCI), California General Plan Land Use. General plan land use from the State of California's statewide layer, for informational purposes only; not legal advice. The jurisdiction's adopted general plan governs.
California Department of Housing and Community Development (HCD), SB 35 statewide determination. HCD's determination for the jurisdiction as published; a project's eligibility for streamlining is decided by the jurisdiction.
California Tax Credit Allocation Committee (CTCAC) and HCD, 2026 Opportunity Map. Used by CTCAC to score tax-credit housing applications; it describes the census tract, not the parcel.
California Department of Technology, California city boundaries (from CDTFA / BOE). City limits as compiled by the state for tax administration; the city and county confirm jurisdiction.
California Department of Water Resources (DWR), SGMA 2019 basin prioritization. DWR's basin priority under the Sustainable Groundwater Management Act; well rules are set by the local groundwater agency and county.
Hazards
FEMA National Risk Index for this census tract, not this parcel. As of Dec 2025.
- Earthquake
- Very high
- Riverine flooding
- Very high
- Wildfire
- Relatively moderate
- Landslide
- Relatively moderate
- Heat wave
- Very low
- Strong wind
- Very low
- Coastal flooding
- No ratingNo expected annual loss computed for this tract
- Drought
- No ratingNo expected annual loss computed for this tract
How we compute this
Recorded flood claims
OpenFEMA NFIP Redacted Claims v3, as of Sep 2026
- Claims since 1978
- 14Insured buildings in this census tract
- Outside the mapped flood zone
- Fewer than 10Rated zone X, B or C
How we compute this
Neighborhood (Census)
Census ACS 2020–2024 5-year, as of Jan 2026
- Median household income
- $51,750± $10,361
- Median home value (owner-reported)
- $341,200± $21,774
- Median rent (gross)
- $1,120± $113
- Homes lived in by their owners
- 53%± 11 pts
- Median year homes were built
- 1939 or earlier
- Average commute (one way)
- 21 min± 7 min · census tract (not published for block groups)
- Population
- 699± 235
Figures for the census block group around this parcel (a few hundred homes), not this property. This product uses Census Bureau data but is not endorsed or certified by the Census Bureau.
How we compute this
Nearby parcels
Land and farm parcels of 1 acre or more in Humboldt County, nearest first.
- 65.8 acres of residential land near Rio Dell0.4 mi
- 55.7 acres of residential land near Rio Dell1.5 mi
- 39.2 acres of residential land near Hydesville1.6 mi
- 47.5 acres of residential land near Rio Dell1.7 mi
- 956 River Bar Rd48.7 acres · Residential lot · 1.8 mi
- 63 acres of residential land near Fortuna2.0 mi
- 1025 River Bar Rd77.1 acres · Residential lot · 2.1 mi
- 40.7 acres of residential land near Hydesville2.5 mi
Land and farm parcels of 1 acre or more in Humboldt County: 1,090 parcel pages
About these numbersSources, county file October 2026
Land type
No building found: county roll (2026) and building footprints (Overture Maps with Microsoft and OpenStreetMap, Sep 2026) · County assessor roll; Overture Maps 2026-09-23.1
Parcel outline
The outline and its edge lengths are measured on the parcel map the map draws; the aerial loads from the public imagery named under it.
Source
Humboldt County GIS (Planning and Building Department), county file Oct 11, 2026.
Record
Public records can be wrong; check before you act.
Parcel: 205-111-040-000
Coordinates: 40.5153° N, 124.1308° W