Stormwater Pond Inventory in 2026: Map Wet Ponds and Dry Basins

Say a stormwater contractor takes over a north Raleigh portfolio with 23 basins on the service drawing and 24 on the ground. The omitted dry basin needs nine visits a year at $196 in direct cost per visit. Over a three-year fixed-scope contract, that missing line consumes $5,292 before any catch-up clearing. The arithmetic is 9 x $196 x 3. There was no water in the depression on the drawing’s reference photo.

Count the basins first. Before agreeing to a takeover price, I would want the estimator and the crew working from a register that shows the same basin boundaries, identifies the gate to use and connects the work to the owner’s maintenance documents. Then settle who receives the inspection report.

Asset Search by PorchRocket finds wet ponds and dry detention basins using aerial and satellite imagery cross-referenced with property records and public datasets. We set the search rules with your stormwater team and return reviewed findings with dated evidence. The work starts with what counts as a basin, including the dry ones.

What belongs in a stormwater pond inventory?

Include every wet pond and dry detention basin inside the agreed search boundary, with one persistent facility ID and enough evidence to assign the next action.

Begin with the buyer’s decision. A maintenance provider needs service boundaries and access. A municipal separate storm sewer system, or MS4, program needs records that support its permit duties. A consultant reconciling an owner’s portfolio needs to connect the physical basin to the right account. Those buyers can share a map while requiring different fields.

I would specify three linked record types:

• A facility record for each basin, with its geometry and local reference number.
• Component records for the visible structures or work zones the scope requires.
• Inspection and service records that accumulate under the facility ID.

Choose the counting unit before searching. If the search treats a wet pond and its forebay as one facility, but the estimator prices them as two maintenance zones, the delivery needs to preserve that relationship so the basin count can be reconciled with both service lines. Write down the rule. Two separately identified basins on one commercial parcel might need two facility records.

Keep the territory boundary explicit too. An HOA boundary, a contractor’s account list and a municipal service area answer different questions. Supply the boundary file or parcel list you want checked, then decide how to handle facilities that cross it.

The broader guide to asset inventory from aerial imagery explains the same process across other physical assets. For ponds, I would add a specific dry-basin review and a maintenance-responsibility field before starting the pilot. A pin without either leaves the estimator another research job.

Wet ponds, dry basins and the units you count

Use the approved facility type where records establish it, and keep the observed water state in a separate field so one photograph does not decide classification.

EPA’s dry detention pond fact sheet describes basins without a large permanent pool, although small pools can occur near an inlet or outlet. Its wet pond fact sheet describes a permanent pool through the year or wet season. That distinction explains why a water-only search can leave dry facilities out.

Use this classification sheet during the pilot:

Record category	Description to check against plans	Counting instruction
Dry detention basin	Temporary storage without a large permanent pool	Keep the facility even when its photographed floor is dry
Wet pond	A designed permanent pool	Map the facility separately from the dated water edge
Wet extended detention pond	A permanent pool with detention storage above it	Retain both characteristics in the type record
Forebay	A pretreatment area associated with the pond	Link it to its parent; count separately only under the agreed rule

The wet extended detention and forebay descriptions come from EPA’s wet pond guidance. Set the counting rule upfront. I would have the buyer approve the inventory units in the pilot, then use those units throughout the register and service workbook.

Keep both names. Give the approved classification its own column and preserve the owner’s informal label as an alias, so the crew can still find a basin it knows by a different name without changing the facility type in the register. Leave an unverified type unresolved until the plan review or field visit settles it.

Put lookalikes into the review log as well. If a candidate is a drainage swale or an ornamental water feature outside your basin scope, return the rejection reason. The buyer should be able to see why that depression did not enter the service count.

What do MS4 rules require in 2026?

Regulated small MS4 post-construction programs must address long-term operation and maintenance; use the applicable permit and facility documents to establish the inventory and inspection tasks.

EPA’s post-construction stormwater program guidance identifies structural and nonstructural controls, an ordinance addressing post-construction runoff, and a program for adequate long-term operation and maintenance. A basin inventory supports that work by giving staff an asset record to inspect and maintain. Read the issued permit before choosing the required inventory fields or reporting schedule.

In 2026, these two local examples show why a single national inspection interval would be the wrong instruction:

Program	Duty described by the official source	How I would record it
Fairfax County, Virginia	County inspections of private stormwater facilities at least once every five years; owners or operators maintain them	Separate county oversight from the private service schedule
Cary, North Carolina	Annual qualified-professional SCM inspections for owners; separate town inspections once per permit cycle, approximately every five years	Track the owner report deadline separately from town oversight
Your portfolio	The applicable permit, recorded agreement and approved maintenance plan establish the tasks to track	Attach the governing documents and assign a responsible contact

The schedules come from Fairfax County’s maintenance and inspection page and Cary’s SCM maintenance and inspection instructions. The Fairfax county inspection interval does not establish an owner’s routine mowing frequency. Cary expressly separates town inspections from the owner’s annual duty.

Give each requirement its own record: source document, affected facilities, responsible party and due date. Store the inspection report beside that record when the task closes. Define stormwater control measure (SCM) and best management practice (BMP) in the workbook’s field dictionary so staff can match either term to the local program’s asset classes.

Keep a basin register distinct from a discharge-location map. Give each asset its own ID. Connect the basin to its visible outlet structure, then add the downstream outfall relationship when records or inspection establish it, preserving the evidence so a later reviewer knows why those locations are linked. If your utility also manages charges, the impervious-surface billing workflow belongs in a linked account record.

Why a water map misses dry detention basins

A search that selects only open water can miss a dry basin, so detention pond mapping should review landform and drainage evidence alongside dated water views.

That follows from EPA’s distinction between wet and dry ponds. The search question is whether a stormwater facility exists at the location. Water visible on one date answers a narrower question.

I would run two review queues. One checks whether each supplied facility record matches the location; the other independently searches the territory for candidates that are missing from the list, including the dry depressions that never entered the owner’s pond schedule. Compare the queues before dispatch.

Give reviewers written examples of the evidence that earns a closer look: a bounded depression beside developed property, a visible embankment, an apparent inlet or a recognizable outlet structure. Require them to record the observation rather than treating any one cue as proof. Use another dated view or the approved drainage plan to test the candidate.

Public hydrography is one reference layer. Check its edition. USGS says the National Hydrography Dataset was retired on October 1, 2023, and says NHD remains available but is no longer maintained. The agency directs users to the 3D Hydrography Program for the most current data. Record the product name and release used in the 2026 project. A familiar layer name is insufficient provenance.

Asset Search cross-references aerial and satellite views with public datasets and property records. The search goes beyond the supplied directories and lists, with people reviewing each candidate. For a dry-basin scope, I would make that independent territory search a pilot acceptance item.

Record the ground covered. Alongside the candidate pins, I would keep a searched-area log showing which parcels or territory tiles were reviewed, which still need another view and which were searched without producing an accepted basin. Blank space on the map needs an explanation.

The basin record your next crew needs

Use a persistent basin ID to join the mapped work boundary to its dated evidence, ownership documents and service history.

Here is the field structure I would request for a maintenance takeover. It is a specification to agree during the pilot, so an estimator and a GIS lead can review the same sample record.

Field group	Fields to request	Decision the fields support
Identity	Basin ID, source-system ID, aliases, parent facility ID	Match the old service book without counting a renamed pond twice
Position	Location, parcel references, facility boundary, coordinate system	Find the basin and load its geometry into the working map
Classification	Recorded type, observed water state, basis for classification	Keep a dry view separate from the approved facility type
Evidence	View dates, review date, dated views, record references	Check which observations support the current answer
Responsibility	Parcel owner, maintenance party, agreement reference, approving contact where found	Route scope approval and document requests
Components and access	Visible structures, access approach, gate location, unresolved access question	Plan the first inspection or service visit
Quantities	Agreed mowing and clearing zones, units, measurement basis, exclusions	Build comparable work packages
Review outcome	Fits, rejects with reason, or unresolved with the settling field check	Accept the finding or assign the remaining investigation
Operations	Inspection record reference, next action, assigned person, due date	Carry the finding into the service schedule

The location can fit the basin search while the maintenance party remains unverified. Preserve those two answers. Otherwise, a reviewer may have to reject a sound physical finding just because the ownership paperwork has not arrived.

Keep capture, field-visit, review and delivery dates in separate columns. A November delivery could contain an older view and a more recent site observation. Those dates tell the estimator which evidence supports the current scope and what needs another look.

Use separate columns for area and length. A clearing polygon in square feet and a shoreline in linear feet need different production rates. Preserve leading zeros in facility IDs by importing them as text. Check the sample import against the delivered record before loading the portfolio.

I would also request a crosswalk: old ID, new ID, reason for any change. When one old record becomes two separately scoped facilities, the crosswalk should preserve that relationship. The crew’s service history can then stay attached to the place it describes.

Finding inlets, outlets and maintenance access

Map visible drainage components and the apparent service approach under each basin ID, then assign a field check for any connection or access detail still unresolved.

Start at the gate. Mark the proposed entrance and approach route, plus a visible staging area when the scope calls for one. The operations lead needs to see where the truck will unload. Ask the owner to confirm permission and provide current entry instructions before dispatch.

Make each access question a task. A note asking the crew to measure the north gate opening tells it what evidence to bring back; a note asking the manager to confirm permission for the east approach belongs with that manager before the crew is dispatched. “Access questionable” leaves both jobs unassigned.

Link visible inlet and outlet features to the parent basin. Preserve separate component IDs when the maintenance workbook prices them separately. If a pipe connection is not established by the records or visible evidence, leave the connection pending and name the check required. Do not draw a continuous underground network from two visible endpoints.

The culvert and drainage inventory method can extend the register beyond the basin boundary. Keep shared components linked so two work packages do not both charge for the same cleanout.

For dredging, put a survey task ahead of the quantity estimate. EPA’s pond and wetland management guidebook describes field bathymetric measurements and sediment probing to establish accumulated material. A dated overhead view can help scope the visit; it does not supply the submerged sediment volume.

Send the field team a short exception sheet sorted by route. Each line should contain the basin ID, dated view, exact question and place to attach the answer. A crew can close that assignment during the authorized visit and return an evidence-backed update to the estimator.

Who is responsible for each pond?

Assign maintenance responsibility from the facility documents and current ownership records, while keeping the parcel owner and the person approving service in separate fields.

Start with the recorded owner. Ask for the approved maintenance agreement and the documents dividing work among parties, then match those records to the basin IDs so the person approving the proposal can see exactly which facilities and tasks the request covers. The parcel reference locates the record.

North Carolina DEQ’s operation and maintenance chapter calls for retaining the maintenance agreement and current plans, and passing those documents along when maintenance responsibility changes. I would make receipt of that packet a takeover task for every facility, with an assigned person to chase missing records.

For an HOA, ask who can approve the routine work and who can authorize a separate repair. For a commercial portfolio, ask whether the manager controls that basin’s budget or must send the proposal to the owner. Record the answer under the account, then link the basins it covers.

Split shared duties into separate rows. When the documents assign routine grounds work to one party and outlet work to another, put each task beside the responsible party and agreement reference, with the inspection-reporting duty recorded wherever the documents assign it. “Public” or “private” is too broad.

A short document request can do the first pass:

Please send the basin list, approved plans, maintenance agreement and latest inspection reports for the properties in this takeover. We will return a marked map for your review. Please identify who approves routine service and who approves separately priced repairs for each facility.

Keep contact research tied to the decision. Asset Search returns owner information and decision-maker contact where it applies. Once the buyer confirms the approving role, put the account’s basin IDs on the proposal schedule. That gives the manager a way to correct responsibility before work begins.

Mowing and clearing quantities that support a price

Price agreed work zones and tasks separately, using mapped surface quantities for initial scope and field measurements for the access or slope details your crew needs.

For a stormwater maintenance takeover, I would request a separate polygon for each mowing or clearing zone. Give every zone a parent basin ID. Draw the mowing boundary around the assigned turf. Exclude the water surface and planting zones unless the approved scope assigns work there.

EPA’s wet pond guidance describes vegetated buffers and planted pond edges as designed features. Check the approved vegetation plan before treating every green area as turf. A visible boundary can guide the quantity review, while the maintenance documents establish the assigned treatment.

Use a quantity sheet with these distinctions:

Work item	Initial inventory quantity	Check before the firm service price
Routine mowing	Agreed zone area, measured in plan view	Equipment approach, working slope and excluded planting areas
Initial brush clearing	Agreed clearing polygon and visible obstructions	Required method, debris handling and access
Inlet or outlet attention	Count of visible, separately scoped components	Component identity and task required
Shoreline work	Agreed linear footage	Treatment width and the approved vegetation task
Sediment removal	Basin and forebay locations requiring investigation	Field-measured volume and the removal scope
Inspection reporting	Facility IDs and linked document requirements	Required professional, form and submission responsibility

Write the measurement basis beside the number. Plan-view area measures the horizontal footprint; it does not measure the sloped surface the crew works. Have the estimator specify the slope measurements and equipment restrictions to check onsite. Mark the quantity as preliminary until those checks are accepted, and retain the measurement basis on the priced schedule.

Use your crew’s production records. Divide the assigned quantity by the crew’s output per hour on comparable work. Multiply the resulting crew-hours by the loaded crew cost, add equipment and disposal costs not already included, and carry travel and setup into each visit. Apply the agreed visit frequency to get the annual direct cost. The commercial landscaping contract guide covers the wider recurring grounds account; the basin worksheet should retain its own tasks and quantities within that account.

Before approving the workbook, reconcile shared zones. An access strip or common embankment should have one paying scope even if it serves two basin records. Mark the assignment on the map and carry the same zone ID into the estimate.

How much is one missed basin worth?

In the Raleigh takeover model, one omitted basin adds $1,764 in annual direct service costs, consuming $5,292 across the three-year contract if the scope cannot be repriced.

Carry forward the opening assumptions: nine scheduled visits each year and $196 per visit in loaded field labor, equipment, consumables and assigned travel. Assume the intended annual selling price for that basin was $2,825. Hold the quantities and prices constant for the three-year contract, with no renewal or repair revenue added.

Item	Arithmetic	Result
Annual direct service cost	9 visits x $196	$1,764
Annual basin revenue when included	Agreed model price	$2,825
Annual gross profit when included	$2,825 minus $1,764	$1,061
Three-year direct cost	$1,764 x 3	$5,292
Three-year revenue when included	$2,825 x 3	$8,475
Three-year gross profit when included	$1,061 x 3	$3,183

These figures answer different questions. If the company must service the omitted basin within an unchanged portfolio price, it absorbs $5,292 in direct cost; if the basin was identified and included before pricing, the same work earns $3,183 in gross profit. The revenue difference is $8,475. Count that difference once.

An owner’s budget needs the same count. In this model, the annual schedule for 24 identically priced basins is 24 x $2,825, or $67,800. A schedule containing 23 shows $64,975. The omitted annual scope is $2,825. That gap can be settled in a scope review before the crews begin.

Price the agreed scope. I would compare the quoted inventory and field-verification cost against the exposure it can address before signature, counting only the basin work the owner agrees to include and leaving catch-up clearing or separately approved repairs outside the recurring-service calculation.

Use the same worksheet when several omissions are possible. Change the count, leave the unit economics visible, and ask what happens if only one omitted basin is confirmed. The decision should still make sense at that smaller count. For the service proposal itself, the pond and basin maintenance contract guide connects the inventory to recurring tasks and approval.

A takeover reconciliation before the first service visit

Reconcile the physical basin count against the signed service schedule and supporting facility records before assigning the first route or accepting the transferred workload.

I would ask for four inputs at the start: the account list, basin drawings, current scope and recent service records. Match them through stable facility IDs. Keep a list of unmatched entries rather than forcing a join based on a similar pond name.

Use the review to answer four separate questions:

• Is the basin present within the search boundary?
• Does the service agreement include its assigned work zones?
• Which party approves and pays for that scope?
• What field task remains before the crew can price or service it?

Preserve the differences. A basin that exists but has no signed service line is a commercial scope issue. A signed line with no established location needs investigation before routing. A facility listed twice under different names needs a crosswalk and an agreed counting decision.

For an acquisition of maintenance accounts, compare service obligations with recorded revenue at the basin level. Ask the seller for the quantities behind each recurring charge and any separately approved work still pending. Use the reconciled register to review the service book; keep the purchase agreement decisions with the buyer’s transaction team.

Hold the map review before dispatch. Show the outgoing manager or owner each accepted basin and unresolved candidate, record the scope decisions beside their IDs, and return a dated service schedule that the estimator can reconcile with the crew’s map and the office’s billing list. Save the approved edition.

Public portfolios need their own bidding path. Bid Control by PorchRocket finds public opportunities and keeps bid papers and addenda together; its landscaping bid page covers related grounds work. Use the landscaping government contract guide to prepare that proposal. Carry the basin IDs and priced work zones into the buyer’s required schedule.

I would release the first route only after the estimator and operations lead review the same accepted file. Keep unresolved access or quantity items assigned to a named role and a due date, with the affected service line flagged for follow-up.

The value of a basin list for account growth

A reviewed basin list earns its place when the same sales hours reach more serviceable accounts, with acquisition cost measured against the gross profit those accounts retain.

Extend the unit economics into an account-growth planning model. Assume a territory contains 150 prospective owner accounts with four serviceable basins apiece. Use $2,825 annual revenue and $1,764 annual direct cost per basin. Assume each signed account starts at the beginning of the service period and retains that scope for five full years, with no price increases, cost inflation or extra repair work. These are undiscounted gross-profit dollars before acquisition spending, office overhead and tax.

Customer lifetime value, or CLV, is the gross profit from an account over the period you expect to serve it. Here, annual account gross profit is 4 x $1,061 = $4,244. Five-year CLV is $4,244 x 5 = $21,220. The customer lifetime value calculator lets you substitute your own scope and retention period.

Give each approach 60 sales hours at a loaded cost of $44 an hour, or $2,640. Allocate 36 hours to research for the unfiltered search and 12 hours to record review for the inventory approach. Assume outreach takes 24 minutes per account and produces one signed account per 60 worked. Keep field verification and proposal preparation outside those outreach minutes; their costs enter the acquisition calculation below.

Sales task or result	Unfiltered property search	Reviewed basin inventory
Research or record-review hours	36	12
Outreach hours remaining	24	48
Accounts worked at 24 minutes each	60	120
Signed accounts at 1 per 60 worked	1	2
Signed share of the original 150 accounts	About 0.7%	About 1.3%
Five-year gross profit from signed accounts	$21,220	$42,440
Sales labor per signed account	$2,640	$1,320

The conversion assumption stays unchanged. The improvement comes from reallocating 24 hours of research to outreach, so the pilot should test how much time the reviewed basin locations and responsible-party records save before the buyer approves a search across the rest of the territory. Record research time and outreach time separately.

Customer acquisition cost, or CAC, is total acquisition spending divided by accounts signed. Let Q be the search quote, F the inventory approach’s other acquisition spending, and B the baseline approach’s other acquisition spending. F and B cover field verification and estimating, plus marketing expenses and sales administration beyond the labor already counted. Assume the baseline uses existing records without buying a list. Baseline CAC is $2,640 + B; inventory CAC is ($2,640 + Q + F) / 2.

Five-year list ROI is ($42,440 minus $2,640 minus Q minus F) / ($2,640 + Q + F). Multiply that result by 100 to express it as a percentage. Enter the quoted scope and your acquisition costs in the lead-list ROI calculator. This measures the inventory campaign’s return; choosing between campaigns also requires the incremental comparison.

Across the inventory campaign, expected five-year gross profit is $42,440 / 150 = about $282.93 per prospective owner account, or $42,440 / 600 = about $70.73 per mapped basin. Those averages include the account the baseline already produces. The extra account contributes $21,220: about $141.47 per prospective owner or $35.37 per mapped basin. Use that incremental value when comparing the added research expense with the baseline.

Keep retention in the decision:

Service duration	Gross profit per four-basin account	Gross profit from two signed accounts
Low: 3 years	$4,244 x 3 = $12,732	$25,464
Base: 5 years	$4,244 x 5 = $21,220	$42,440
High: 7 years	$4,244 x 7 = $29,708	$59,416

I would buy on the low case: the extra account contributes $12,732 over three years. The inventory approach beats the baseline when Q + F minus B is less than $12,732. Equal sales labor cancels from that comparison. Set a lower spending ceiling to preserve the profit you want from the extra account, and check how soon the service receipts cover the upfront spending.

Keep travel inside direct service cost. Test proposed stops with the route-density calculator before giving an account beyond the working route the same price as a basin beside an existing stop.

Keeping the inventory current between inspections

Preserve the basin ID across refresh editions, and record each dated change as an update to its evidence or scope rather than creating an unrelated asset.

Save the starting edition. When a later review finds a revised work zone, a newly identified basin or a different responsible party, attach that change to its evidence and assign the next action so the office can decide which service lines need attention. Preserve the earlier scope alongside the revision.

Through Asset Search, buyers can monitor a territory as new imagery becomes available and receive changes with before-and-after dates. A changed requirement can also trigger a review of sites already searched. If your maintenance team adds a clearing method that makes another basin type serviceable, ask for the earlier candidates to be reviewed under that rule.

Match the refresh to the decision. An inventory refresh supports scope review and field planning; keep the inspection calendar tied to the governing facility requirements. Preserve field reports beside the remote observations so the next reviewer can see which evidence settled a question.

For this portfolio, I would schedule a quarterly territory review and update the working register after each accepted field report. Asset Search offers scheduled refreshes; agree on the cadence when scoping the subscription. Send accepted facility and boundary changes to the staff member who updates the estimate or route. Assign unresolved findings to the person obtaining the missing evidence. Ownership-document changes need their own record review.

The asset monitoring guide covers ongoing territory editions. For a basin portfolio, start by identifying who approves changes to the register and who updates the service schedule after approval. A refresh file sitting in an inbox cannot change next week’s route.

How to inventory stormwater ponds, step by step

Run a 30-day inventory kickoff that defines the counting rules, tests a reviewed pilot and assigns field checks before the portfolio receives a new service schedule.

The dates below are the buyer’s working plan. Agree on the search and delivery schedule in the scope, including the time needed for document requests and authorized visits.

1. Days 1 and 2: define the territory and decision. Supply the boundary or account list. State whether the inventory supports a maintenance takeover, territory growth or an MS4 program. Identify who accepts the final register and which decisions require field evidence.
2. Days 3 and 4: write the basin rules. Include wet ponds and dry detention basins. Set the treatment of forebays, linked basins and lookalikes. Choose the record fields and coordinate system with the estimator or GIS lead who will use the delivery.
3. Days 5 and 6: request the Asset Search pilot. Use the stormwater asset search form, describe the basin types and territory, and provide sample records. Ask for dated views, parcel and owner research, visible access, agreed quantities, and fits, rejects and unresolved outcomes. Start with a small paid pilot credited toward the full order.
4. Days 7 to 10: assemble the takeover packet. Request approved plans, maintenance agreements and inspection reports. Match each document to a facility ID. Mark missing records for follow-up and ask the owner to identify the person who approves each scope.
5. Days 11 to 15: review the delivered pilot together. Walk through examples with the estimator and the operations lead. Check dry-basin candidates and the rejection reasons. Resolve how the workbook counts shared zones, then test a sample import before approving the wider search.
6. Days 16 to 22: close the field questions. Route authorized visits around the exception sheet. Confirm the assigned access and quantity details. Attach the observation to its basin ID, and send survey requirements to the person preparing the dredging or repair scope.
7. Days 23 to 26: reconcile quantities and economics. Compare the reviewed register with the contract schedule. Apply your production rates and visit frequencies. Calculate direct cost and margin by basin, then review the service boundary with the owner before accepting extra work.
8. Days 27 to 30: approve the working edition. Import the accepted file, preserve the ID crosswalk, and publish the service schedule to the crew. Assign remaining document requests and establish a refresh owner. Keep a dated copy of the edition behind the signed scope.

Measure the pilot by the questions it settles. Track old records matched, newly accepted basins and unresolved questions closed in the field. Include the hours the estimator spends reviewing the delivery. Those observations let the owner decide whether the next territory should use the same scope or a revised one.

Choosing the search scope and payment model

Use per-investigation terms for a defined takeover, per-accepted-result terms for territory prospecting, and a subscription when the buyer needs continuing inventory refresh editions.

A takeover begins with a fixed account list and a reconciliation question for each site. Per completed investigation fits that job: the buyer receives the reviewed answer even when the supplied pond record is rejected or a field question remains. Agree on what constitutes a finished investigation before the pilot begins.

A growth search starts with a territory and acceptance rules for the finds the company can service. Per accepted result fits that purchase. Define the paying unit. If the buyer wants owner accounts while the search returns individual basins, agree on how several basins under one owner count toward acceptance before those records enter the delivery or the sales workbook.

For ongoing oversight, a subscription can cover monitoring and refresh editions. Set the territory and required evidence, then agree how changes enter the working register. Asset Search also offers success-based terms tied to an agreed outcome when that arrangement fits the buyer’s decision.

Most buyers start with a small paid pilot credited toward the full order. Supply enough variety to test the rules, including dry basins and an awkward access case. Require a sample in the intended delivery format so the buyer can assess the records as well as the map.

The quote should follow the scope. State the investigation unit, required record research, quantity fields and acceptance process in the request. That gives the buyer a defined purchase and gives the search team the rules it will be judged against.

What Asset Search sends back for a basin takeover

The fastest way to start a reviewed stormwater inventory is to give Asset Search your territory and basin definitions through the two-minute form. We search for wet ponds and dry detention basins across the contiguous United States, cross-referencing aerial and satellite views with property records and public datasets. People review every candidate; findings carry dated evidence. For a takeover, request per-investigation terms and a small paid pilot credited toward the full order. We return a scope and quote, then deliver the pilot in CSV, Excel or GIS-ready files so your team can approve the records before expanding the search.

For your takeover, agree on these six deliverables:

• A basin register with stable IDs, parcel references and a crosswalk to the supplied service book.
• Dated views and observed facts supporting each reviewed location, with wet and dry types covered by the search rules.
• Owner information and the maintenance-responsibility research needed to route the account, with decision-maker contact where it applies.
• Visible components and access, plus the agreed mowing and clearing quantities with their units and exclusions.
• Every disposition: fits, rejects with reasons, and unresolved with the field check that settles the question.
• CSV, Excel or GIS-ready delivery, with a refresh scope when the portfolio needs continuing review.

Tell us what to find through Asset Search for stormwater basins, and put every accepted basin on the schedule before the crew takes over.