BasinWise — Dependency & Reliability Intelligencerelease v1 · genome v1 · run run_water_rights_v133 signals92,201 instances
Overview / Signals / Water-backed land assemblage / siginst_ep_wr_20260718_water-backed-assemblage_0076

Water-backed land assemblage

candidateMARSHALLVILLE DITCH →

CITY OF BOULDER holds 20 parcels totaling 1,391 ac (assessed $8.1M) under MARSHALLVILLE DITCH — a water-backed assemblage on one system (supply quality 0.71). assessor roll from annual OIT data call; ownership may be up to 12 months stale.

Priority
71.4
composite 0–100
Raw score
100.0
detector output 0–100
Confidence
0.72
0–1
Observed
2026-07-18
12:00:00
Priority componentsweights: impact .30 · urgency .25 · confidence .20 · freshness .15 · novelty .10
impact1.00
urgency0.50
confidence0.72
freshness0.50
novelty0.70
Record payloadcustomer_payload — everything the detector carried
wdid
0600585
state
CO
county
BOULDER
parcel_ids
["08013-157711000064","08013-157711000039","08013-157710000009","08013-157710000006","08013-157710000008","08013-146531000041","08013-157709000022","08013-157716000001","08013-157716000065","08013-157716000002","08013-146532000006","08013-146530000014","08013-146530000001","08013-146519000028","08013-146519000018","08013-146531000036","08013-146531000034","08013-146531000027","08013-146530000022","08013-146531000016"]
county_fips
08013
identifiers
{"wdid":"0600585"}
staleness_note
assessor roll from annual OIT data call; ownership may be up to 12 months stale
structure_name
MARSHALLVILLE DITCH
assemblage_owner
CITY OF BOULDER
assessor_vintage
2026-01-01
score_components
{"acres":1391,"parcels":20,"water_quality":0.71,"assessed_value":8076142}
Provenance receiptexactly where this detection came from
instance id
siginst_ep_wr_20260718_water-backed-assemblage_0076
record
boulder-city-of|0600585 @ water_parcels
signal
signal:water-backed-assemblage
definition
v1
genome
v1 · run run_water_rights_v1
epoch
ep_wr_20260718
lineage status
resolved
detected
2026-07-18 12:00:00
valid from
2026-07-18 12:00:00
source refs
["cdss-structures","cdss-netamounts","cdss-admin-calls","cdss-divrec","co-oit-parcels","nrcs-snotel","openet","water-court-outcomes","ditch-ledger-program"]
Co-firing signalsother detections on this record
PriSignalDetailScore
71Critical call exposureMARSHALLVILLE DITCH (1872 priority) carries 777.6 day-equivalents of observed call exposure from 17 senior caller(s); dominant caller S BOULDER BEAR CR DITCH (128.8 day-eq). 620 season-days curtailed in the last five seasons.51.7
70Underused water asset372.3819 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
68Critical call exposureMARSHALLVILLE DITCH (1878 priority) carries 742.2 day-equivalents of observed call exposure from 16 senior caller(s); dominant caller S BOULDER BEAR CR DITCH (128.8 day-eq). 598 season-days curtailed in the last five seasons.51.1
68Critical call exposureMARSHALLVILLE DITCH (1865 priority) carries 661.9 day-equivalents of observed call exposure from 12 senior caller(s); dominant caller S BOULDER BEAR CR DITCH (128.8 day-eq). 522 season-days curtailed in the last five seasons.49.9
63Season call nowcast: expected curtailmentMARSHALLVILLE DITCH, 2026 season outlook: Apr 1 SWE 61% of median → severe-class year; expected curtailment ~145 of 214 season days from the basin's administration record. Dominant caller S BOULDER BEAR CR DITCH: P(call by Jun 15) = 0 over 5 comparable seasons.76.4
60Season call nowcast: expected curtailmentMARSHALLVILLE DITCH, 2026 season outlook: Apr 1 SWE 61% of median → severe-class year; expected curtailment ~143 of 214 season days from the basin's administration record. Dominant caller S BOULDER BEAR CR DITCH: P(call by Jun 15) = 0 over 5 comparable seasons.75.8
59Season call nowcast: expected curtailmentMARSHALLVILLE DITCH, 2026 season outlook: Apr 1 SWE 61% of median → severe-class year; expected curtailment ~119 of 214 season days from the basin's administration record. Dominant caller S BOULDER BEAR CR DITCH: P(call by Jun 15) = 0 over 5 comparable seasons.68.1
54Drought reliability cliffMARSHALLVILLE DITCH: modeled irrigation-season reliability 84% in median years → 42% dry → 32% severe drought (2002-class replay). A 52-point cliff under stress.77.4
52Underused water asset137.287 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
52Drought reliability cliffMARSHALLVILLE DITCH: modeled irrigation-season reliability 86% in median years → 47% dry → 33% severe drought (2002-class replay). A 53-point cliff under stress.79.1
51Parcel-split allocation riskIrrigated place D1-2020-10600146 (139 ac, GRASS_PASTURE, served by MARSHALLVILLE DITCH) now spans 7 parcels held by 5 owner(s) — 7 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.100.0
50Underused water asset107.014 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
50Underused water asset103.658 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
49Underused water asset99.8447 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
49Underused water asset92.561 ac (BOULDER County, UNKEFER DONALD W JR REVOCABLE TRUST ET AL): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
47Underused water asset64.346 ac (BOULDER County, WILDFLOWER RANCH LLC): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
46Underused water asset60.667 ac (BOULDER County, OAKLEY DAVID S & BARBARA J): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
46Underused water asset60.087 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
46Parcel-split allocation riskIrrigated place D1-2020-10600556 (60 ac, GRASS_PASTURE, served by MARSHALLVILLE DITCH) now spans 3 parcels held by 3 owner(s) — 3 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.98.2
46Parcel-split allocation riskIrrigated place D1-2020-10600550 (56 ac, GRASS_PASTURE, served by MARSHALLVILLE DITCH) now spans 3 parcels held by 3 owner(s) — 3 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.98.1
46Underused water asset50.3448 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
45Parcel-split allocation riskIrrigated place D1-2020-10603548 (49 ac, ALFALFA, served by MARSHALLVILLE DITCH) now spans 2 parcels held by 2 owner(s) — 2 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.89.0
45Underused water asset44.878 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
45Underused water asset42.197 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
45Parcel-split allocation riskIrrigated place D1-2020-10613531 (41 ac, ALFALFA, served by MARSHALLVILLE DITCH) now spans 4 parcels held by 3 owner(s) — 4 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.100.0
45Underused water asset39.45 ac (BOULDER County, KIMBER NANCY REV TRUST ET AL): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
45Parcel-split allocation riskIrrigated place D1-2020-10613387 (38 ac, SMALL_GRAINS, served by MARSHALLVILLE DITCH) now spans 3 parcels held by 3 owner(s) — 3 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.97.8
45Underused water asset36.944 ac (BOULDER County, MCCAY ESTATES LLC): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
45Parcel-split allocation riskIrrigated place D1-2020-10613542 (35 ac, GRASS_PASTURE, served by MARSHALLVILLE DITCH) now spans 2 parcels held by 2 owner(s) — 2 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.88.7
45Parcel-split allocation riskIrrigated place D1-2020-10600775 (35 ac, GRASS_PASTURE, served by MARSHALLVILLE DITCH) now spans 5 parcels held by 3 owner(s) — 5 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.100.0
44Underused water asset33.858 ac (BOULDER County, SMITH RENE TRUST): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
44Underused water asset33.49 ac (BOULDER County, BARRON THOMAS A & CURRIE C): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
44Parcel-split allocation riskIrrigated place D1-2020-10611379 (26 ac, ALFALFA, served by MARSHALLVILLE DITCH) now spans 2 parcels held by 2 owner(s) — 2 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.88.5
44Underused water asset27.601 ac (BOULDER County, GREENE ANN REVOCABLE TRUST ET AL): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
44Underused water asset26.214 ac (BOULDER County, SWANSTROM GARY J LIVING TRUST): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
44Parcel-split allocation riskIrrigated place D1-2020-10605217 (21 ac, GRASS_PASTURE, served by MARSHALLVILLE DITCH) now spans 2 parcels held by 1 owner(s) — 2 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.88.4
44Underused water asset23.8542 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
44Underused water asset23.285 ac (BOULDER County, TILDEN GREG): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
43Underused water asset21.249 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
43Underused water asset21.018 ac (BOULDER County, JACKSON JANET A): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
43Parcel-split allocation riskIrrigated place D1-2020-10613566 (15 ac, GRASS_PASTURE, served by MARSHALLVILLE DITCH) now spans 2 parcels held by 2 owner(s) — 2 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.88.3
43Underused water asset20.276 ac (BOULDER County, KOMHYR CAROL REV TRUST): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
43Underused water asset20.146 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
43Underused water asset19.8405 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
43Underused water asset19.732 ac (BOULDER County, ESCHMEYER KRISTINA D TRUST): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
43Underused water asset18.2284 ac (BOULDER County, 8171 BASELINE ROAD LLC): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
43Parcel-split allocation riskIrrigated place D1-2020-10605216 (12 ac, ALFALFA, served by MARSHALLVILLE DITCH) now spans 2 parcels held by 2 owner(s) — 2 parcel(s) show NO entitlement instrument of their own. The land split; the water paper didn't.88.2
43Underused water asset17.691 ac (BOULDER County, DELILLE DEAN A): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
43Underused water asset17.706 ac (BOULDER County, CITY OF BOULDER): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3
43Underused water asset16.067 ac (BOULDER County, WILLOW GLEN HOMEOWNERS ASSOCIATION INC): mapped irrigation ended 2020 — 6 years idle — while senior physical service on MARSHALLVILLE DITCH still attaches. Idle water on idle ground.76.3