Carver County Ditch Authority hears viewer reports, moves to continue redetermination for ditches 6, 9 and 10

The Carver County Ditch Authority held a public hearing to consider viewers’ reports and redetermined benefit recommendations for County Ditches 6, 9 and 10, then closed public comment and directed staff to prepare findings for adoption at a later meeting.

Viewers from H2O Overviewers explained that they used LIDAR-derived elevation data, soils and field “ground‑truthing” to map watersheds and classify land into four agricultural classes (class 1/red through class 4/blue). Scott Henderson, the lead viewer, told the authority the classification and grading process produces a tabular spreadsheet that breaks benefits down to the hundredth of an acre and accounts for roads, woodlots, farmsteads and non‑tilled areas.

The conclusions the viewers recommended were substantial increases in assessed benefits compared with the old rolls. For Ditch 6, Henderson said the currently listed benefits are just under $350,000 and the viewers recommended about $1,100,000; the proposed watershed for that system rose from roughly 2,100 acres on the books to a proposed watershed of nearly 14,000 acres with a benefited area of just over 11,000 acres. For Ditch 9, current benefits listed at about $44,000 were recommended to be retabulated to roughly $5,600,000 based on a proposed benefited area of about 3,600 acres. For Ditch 10 the viewers reported current benefits of roughly $500,000 and recommended about $3,200,000 (viewer figures shown in the owners’ packets and the online tabular report).

Henderson described how viewers score ditch capacity and efficiency against modern drainage standards, applying percentage reductions for sub‑optimum lateral or tile capacity (for example an eighth‑inch efficiency drop producing a 12.5% reduction applied to affected subwatersheds). He also described the statutory requirement to value a 16.5‑foot perennial vegetative buffer (one rod) on either side of open ditches and explained the viewers’ approach to damage payments: prime tillable acres are paid at full damage, non‑tilled or residential acres at 60% (subprime), and wetlands a nominal dollar‑per‑acre payment.

Public commenters asked how access for inspection and maintenance is handled, whether the county maintains maps online, and whether buffer payments may have been paid previously. Attorney Kolb explained that under the drainage code the drainage authority has a right of entry and a construction footprint right, although damages must be paid when a lawful use (for example a growing crop) is disturbed. County staff confirmed maps and owners’ packets are posted on the county’s website and that county records will be checked for any prior payment of buffer damages; Kolb said the order and findings can include a contingency that a buffer damage payment will be omitted if staff confirms earlier payment.

Property owners also pressed the authority for detail on who would handle maintenance and how tree preservation would be addressed during any construction. A resident worried about an oak tree that predates settlement; counsel and staff responded that perennial woody cover can meet buffer requirements in many cases and that viewers and contractors generally attempt to avoid important trees when possible, but that the authority may need to remove vegetation to conduct statutory maintenance if it is within the original construction footprint. The county’s inspector and drainage staff said staff attempts to contact landowners before conducting inspections or maintenance.

After questions and public comment, the board closed the public comment period by voice vote and later approved a motion directing the county attorney to prepare findings and a draft order consistent with the proceedings, with a continuation to the county board meeting on Feb. 18, 2025, for final consideration.

The viewers’ reports and the full tabular breakdown of acres and per‑parcel benefits and damages remain available in the owners’ packet and on the county website; the board and staff said any future maintenance or improvement projects will be presented in separate public proceedings with project‑specific cost estimates and separate assessments.