Why grading and drainage is needed in Hickman
Hickman has no city storm system, so a lot handles its own water on ground with a shallow hardpan. The community runs on package treatment and individual septic, and its soils, San Joaquin and Madera sandy loams among them, carry a duripan a few feet down that slows how fast water soaks away. On a near-level lot over hardpan, the building code fall away from a wall and a defined outlet do the work, because water cannot simply be sent into the ground.
New drainage here is built to a County storm standard and has to empty itself. The County requires new storm drainage on a Hickman site to be designed for the 100-year, 24-hour storm and to dewater within 48 hours, so a basin, swale or dry well on the parcel is the system rather than a connection to a public line. The construction stormwater program covers clearing and grading, so a dairy pad or a larger site of an acre or more needs the owner's coverage before work starts.
The Turlock Irrigation District canal edges the town, and work near it has a season. The TID Main Canal runs just east of the plan boundary and borders the church campus, and a canal segment was recorded inside Hickman, with TID allowing work on its facilities only in the non-irrigation season, roughly 1 November to 1 March. A private drain has no right to discharge into the canal; the water is taken to an approved point, and the district decides work touching its right of way.
Digging waits on a positive response from every buried line. Government Code 4216.2 has the dig area marked in white and the notification center told two working days ahead, with nothing opened until every operator answers. It matters where old undersized water mains are being replaced along Hickman Road, Lake Road and Montpelier Road, where septic lines and leach fields run the yards, and where the TID canal crosses; grading is excavation under the same article, so a machine cut waits like a trench.
Low ground south of town floods, and the community sits exposed if an upstream dam fails. The intersection of Montpelier and Whitmore Roads south of Hickman flooded in December 2022, February 2024 and January 2026, and the County's hazard plan names Hickman among the communities most exposed to inundation if a dam fails, with the Hickman Road Bridge the crossing to Waterford. Fill and grading in a mapped flood hazard area are placed, compacted and sloped against shifting and erosion, and an address is checked against the current FEMA map.
Hickman's wastewater runs on package treatment and individual septic systems, and the City of Waterford supplies only its water. With no public storm system either, a Hickman lot is graded to hold and shed its own rain to an approved point.
Grading and drainage, as delivered in Hickman
Hickman is fifteen road miles from the Modesto base, in by Yosemite Boulevard to Hickman Road. Every job leaves the same record: levels before and after, photographs of each drain before backfill, and the water test.
The contractor assigned to the request walks the property, and rain shows where the water sits over the hardpan. Site visit scheduled at a time that suits you. Start date set in the written estimate. The fall at each wall, the inlets, any septic field and the point the site sheds to are all recorded.
The dig area is marked in white before the notification center is told, and no ground opens until every operator has answered for its line. A high priority installation within ten feet is met on site first, and the ticket is renewed by its 28th day.
The grading permit comes from the Stanislaus County Building Permits Division in Modesto, since Hickman is unincorporated, with septic work approved through the County's environmental office and the owner's plans and any soil report in hand before work starts.
A trench of five feet or more takes a protective system, spoil is held two feet back from the edge, and paving is supported before it is undercut.
Unsuitable ground is stripped, fill is placed in lifts and compacted without organics or oversize rock, and the backfill at a foundation is set high for the settlement to come. The finished grade is cut so each run reaches its basin or inlet.
French drains are bedded in clean stone and wrapped, channels are set in concrete, and the discharge goes by gravity or pump to a point the County accepts.
The finished falls are surveyed, water is run through the new drains, bare ground is stabilised, and the County building official signs the work off for the owner's file.
Where grading and drainage is needed in Hickman
Hickman is a small grid between Hickman Road and the TID canal, edged by dairy land and split from Waterford by the river.
Hickman Road along the town's west edge
A two-lane collector with no sidewalk near the town, where old undersized mains are being replaced. A frontage here drains across its own ground to whatever the road shoulder offers, since there is no storm main to reach.
Lake Road
The east-west collector to Turlock Lake, with an all-way stop at Hickman Road and a farmed Williamson Act parcel across it. Its 6-inch main is being replaced, and a lot here is graded to a defined low point rather than a public line.
I Street and the Hickman Community Church campus
Two parcels with 28,865 square feet of buildings, on septic with Waterford water and the TID canal on the east, where a drainage basin is planned. A campus that size drains wide roofs and parking to few inlets, so the grade between them carries the water.
Hickman Community Charter school campus
South of the church, sharing a reciprocal access easement. School ground drains its roofs and parking to few openings, so the grade between them is the drainage design, and the 2016 tornado passed near the elementary school.
Montpelier Road and 4th to 6th Streets
Where the town's smallest 4-inch mains are being replaced with larger pipe. Side-street stops here operate freely, and a settled yard is surveyed against the wall line to find where the fall was lost.
Residential streets between Hickman Road and Montpelier Road
Kim, Lorenzo, Davis and Elma Streets, in the plan's Residential designation. These lots drain across their own ground, so a defined low point and a route off the parcel matter more than any pipe.
TID Main Canal edge
The TID Main Canal just east of the plan boundary and across the farmland south, bordering the church campus. A private drain near the canal goes to an approved point, not into it, and TID work runs only in the winter non-irrigation season.
Southern Pacific Oakdale Branch line
The rail line on which Hickman was built as a grain shipping point in 1891, a segment recorded inside town in 2019. Track ballast sits higher than the yards beside it, which is why water stops where it does.
Hickman Road Bridge and the Tuolumne River crossing
The Hickman Road bridge over the Tuolumne, being replaced with a wider box-girder crossing, the community's link to Waterford. The 1979 study put the river's 100-year flood elevation there at 86 feet, and river-adjacent grading follows the flood-hazard rules.
Riverview Road and the river terrace
South of the bridge, the Hickman Road corridor passes orchards, pasture and larger ranchette parcels on the river terrace. A large parcel is graded to hold and shed its own water rather than reach a public line.
Montpelier Road south to Whitmore Road
The intersection flooded in December 2022, February 2024 and January 2026, and the road was closed from Keyes to Whitmore for flooding. Low ground here collects the water, so a fronting lot is shaped to a defined outlet.
Hickman Road south to East Keyes Road
The dairy land south to East Keyes Road, where a dairy applied to expand its free-stall barns. Farm ground turning into built sites needs a pad, a fall and a basin, and its drainage is held on the parcel.
Grading and drainage sub-services available in Hickman
Questions from Hickman property owners and managers
There is no city storm system, so a Hickman lot handles its own water. The County requires new drainage to be designed for the 100-year, 24-hour storm and to empty within 48 hours, and the local San Joaquin and Madera soils carry a duripan a few feet down that slows how fast water soaks away. A basin, swale or dry well on the parcel is the system, and its discharge goes to a point the County accepts, not into the TID canal.
Hickman is unincorporated, so the grading permit comes from the Stanislaus County Building Permits Division in Modesto, and a soils test may be required at application to find unstable or expansive ground. Septic work, or any addition to a septic or alternative wastewater system, is approved through the County's environmental office as part of the building permit. Plans and any report are the owner's, and the work is built to what the building official requires.
The Montpelier and Whitmore Roads intersection south of Hickman flooded in December 2022 and January 2026, and the road was closed from Keyes to Whitmore for flooding in February 2024. On low ground like that a lot is graded to a defined outlet and a raised threshold. For a claim, record where the water entered, how deep it stood and how long, with dated photographs before anything is moved, since the public road is not the property's to fix.
TID allows work on its irrigation facilities only in the non-irrigation season, which typically runs from 1 November to 1 March, and the Main Canal runs just east of the plan boundary and borders the church campus. A private drain has no right to discharge into the canal; the water is taken to an approved point, and work touching the canal or its right of way is arranged with TID on its own terms and to its standards.
The building code sets a minimum slope for the ground next to a foundation over a set distance, with lower minimums for a swale and for paving within that band, and it allows a reduced slope where soil conditions warrant. Where a lot line or an obstruction leaves no room for the full fall, a swale or another approved way of carrying the water off is accepted. Over Hickman's shallow hardpan that measured fall to a surface outlet matters, since the water will not sink away, and the walk or apron poured on that fall is concrete and ADA work.
Not more of it than ran there before the work. The grading appendix of the building code, where the county has adopted it, holds drainage across a property line to what existed before grading, keeps excess or concentrated flow on site or sends it to an approved drainage facility, and asks for the discharge area to be protected against erosion. The TID canal is a district facility, so anything reaching it goes to a point the district accepts, not over a bank.
Grading and drainage near Hickman
