Rivarbukt

Site 10822 · Alta municipality · Production area 12, Vest-Finnmark

Status unknown: not reported in week 39Operated by Cermaq Norway Salmon AS · group Cermaq

unknownAdult female lice per fishNo count in week 39. Latest: 0.14 in week 28, 2026Week 39, 2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Weeks above the limit in 2026of 28 weeks with a countCalculated by the Salmon Ledger · Norwegian Food Safety Authority · updated 01 Oct 2026

0Lice treatments in 2026None recorded2026 · Norwegian Food Safety Authority · updated 01 Oct 2026

0Active disease casesNone recordedRegister since 26 Nov 2024 · Norwegian Food Safety Authority · updated 01 Oct 2026

12Wellboat visits in 2026by 4 different vessels · latest 02 Aug 2026Derived from AIS · Norwegian Coastal Administration (AIS) · updated 01 Oct 2026

0Escapes reportedNone reportedSince 2006 · Directorate of Fisheries · updated 01 Oct 2026

Sea lice against the limit

Weekly average of adult female lice per fish, as reported by the company. For this site the limit is 0.2 in weeks 21–26 and 0.5 for the rest of the year. Hatched weeks have no count and count neither as above nor below.

2026

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

Show as table

Adult female lice per fish per week, 2026
Week	Adult female lice per fish	Lice limit	Status
1	0.09	0.5	Below the limit
2	0.11	0.5	Below the limit
3	0.10	0.5	Below the limit
4	0.10	0.5	Below the limit
5	0.10	0.5	Below the limit
6	0.09	0.5	Below the limit
7	0.10	0.5	Below the limit
8	0.08	0.5	Below the limit
9	0.08	0.5	Below the limit
10	0.08	0.5	Below the limit
11	0.05	0.5	Below the limit
12	0.06	0.5	Below the limit
13	0.03	0.5	Below the limit
14	0.05	0.5	Below the limit
15	0.05	0.5	Below the limit
16	0.03	0.5	Below the limit
17	0.02	0.5	Below the limit
18	0.00	0.5	Below the limit
19	0.02	0.5	Below the limit
20	0.03	0.5	Below the limit
21	0.00	0.2	Below the limit
22	0.10	0.2	Below the limit
23	0.10	0.2	Below the limit
24	0.02	0.2	Below the limit
25	0.08	0.2	Below the limit
26	0.09	0.2	Below the limit
27	0.14	0.5	Below the limit
28	0.14	0.5	Below the limit
29	unknown	0.5	Reported without a count
30	unknown	0.5	Reported without a count
31	unknown	0.5	Not reported
32	unknown	0.5	Not reported
33	unknown	0.5	Not reported
34	unknown	0.5	Not reported
35	unknown	0.5	Not reported
36	unknown	0.5	Not reported
37	unknown	0.5	Not reported
38	unknown	0.5	Not reported
39	unknown	0.5	Not reported

Earlier years

20250 of 47 weeks with a count above the limit

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

Show as table

Adult female lice per fish per week, 2025
Week	Adult female lice per fish	Lice limit	Status
1	0.00	0.5	Below the limit
2	0.06	0.5	Below the limit
3	0.01	0.5	Below the limit
4	0.01	0.5	Below the limit
5	0.01	0.5	Below the limit
6	0.00	0.5	Below the limit
7	0.00	0.5	Below the limit
8	0.00	0.5	Below the limit
9	unknown	0.5	Reported without a count
10	0.00	0.5	Below the limit
11	0.03	0.5	Below the limit
12	unknown	0.5	Reported without a count
13	0.00	0.5	Below the limit
14	unknown	0.5	Reported without a count
15	0.00	0.5	Below the limit
16	unknown	0.5	Reported without a count
17	0.00	0.5	Below the limit
18	unknown	0.5	Reported without a count
19	0.01	0.5	Below the limit
20	0.00	0.5	Below the limit
21	0.00	0.2	Below the limit
22	0.00	0.2	Below the limit
23	0.00	0.2	Below the limit
24	0.00	0.2	Below the limit
25	0.01	0.2	Below the limit
26	0.00	0.2	Below the limit
27	0.01	0.5	Below the limit
28	0.00	0.5	Below the limit
29	0.00	0.5	Below the limit
30	0.03	0.5	Below the limit
31	0.00	0.5	Below the limit
32	0.00	0.5	Below the limit
33	0.03	0.5	Below the limit
34	0.03	0.5	Below the limit
35	0.03	0.5	Below the limit
36	0.05	0.5	Below the limit
37	0.06	0.5	Below the limit
38	0.03	0.5	Below the limit
39	0.09	0.5	Below the limit
40	0.46	0.5	Near the limit
41	0.05	0.5	Below the limit
42	0.09	0.5	Below the limit
43	0.05	0.5	Below the limit
44	0.06	0.5	Below the limit
45	0.06	0.5	Below the limit
46	0.18	0.5	Below the limit
47	0.48	0.5	Near the limit
48	0.39	0.5	Below the limit
49	0.11	0.5	Below the limit
50	0.15	0.5	Below the limit
51	0.13	0.5	Below the limit
52	0.10	0.5	Below the limit

20240 of 11 weeks with a count above the limit

Source: Norwegian Food Safety Authority, weekly lice counts reported by the companies · Limit: Regulation on sea lice control § 8 · Updated 01 Oct 2026

Show as table

Adult female lice per fish per week, 2024
Week	Adult female lice per fish	Lice limit	Status
1	unknown	0.5	Not reported
2	unknown	0.5	Not reported
3	unknown	0.5	Not reported
4	unknown	0.5	Not reported
5	unknown	0.5	Not reported
6	unknown	0.5	Not reported
7	unknown	0.5	Not reported
8	unknown	0.5	Not reported
9	unknown	0.5	Not reported
10	unknown	0.5	Not reported
11	unknown	0.5	Not reported
12	unknown	0.5	Not reported
13	unknown	0.5	Not reported
14	unknown	0.5	Not reported
15	unknown	0.5	Not reported
16	unknown	0.5	Not reported
17	unknown	0.5	Not reported
18	unknown	0.5	Not reported
19	unknown	0.5	Not reported
20	unknown	0.5	Not reported
21	unknown	0.2	Not reported
22	unknown	0.2	Not reported
23	unknown	0.2	Not reported
24	unknown	0.2	Not reported
25	unknown	0.2	Not reported
26	unknown	0.2	Not reported
27	unknown	0.5	Not reported
28	unknown	0.5	Not reported
29	unknown	0.5	Not reported
30	unknown	0.5	Not reported
31	unknown	0.5	Not reported
32	unknown	0.5	Not reported
33	unknown	0.5	Not reported
34	unknown	0.5	Not reported
35	unknown	0.5	Not reported
36	unknown	0.5	Not reported
37	unknown	0.5	Not reported
38	unknown	0.5	Not reported
39	unknown	0.5	Not reported
40	unknown	0.5	Not reported
41	unknown	0.5	Reported without a count
42	0.00	0.5	Below the limit
43	0.00	0.5	Below the limit
44	0.00	0.5	Below the limit
45	0.00	0.5	Below the limit
46	0.00	0.5	Below the limit
47	0.00	0.5	Below the limit
48	0.00	0.5	Below the limit
49	0.00	0.5	Below the limit
50	0.00	0.5	Below the limit
51	0.00	0.5	Below the limit
52	0.00	0.5	Below the limit

Treatments

Norwegian Food Safety Authority

Week 49, 2025
Mechanical delousing1 pen
Week 48, 2025
Mechanical delousing3 pens
Week 41, 2025
Other treatment, Freshwater treatment, Mechanical delousing4 pens · Termolicer+ etterspyling
Week 40, 2025
Other treatment2 pens · Termolicer+ etterspyling

Show all 7

Week 50, 2024
Medicinal feedWhole site · Emamectin benzoat
Week 49, 2024
Medicinal feedWhole site · Emamectin benzoat
Week 48, 2024
Medicinal feedWhole site · Emamectin benzoat

Disease

Norwegian Food Safety Authority

No cases in the Food Safety Authority's register of notifiable diseases (since 26 Nov 2024).

Escapes

Directorate of Fisheries

No escapes reported from this site since 2006.

Wellboat visits

12 visits in 2026

Visits are derived by us from the Coastal Administration's AIS positions: a fish carrier stationary within 500 metres of the farm for at least 30 minutes. The AIS archive lags about 17 days. A visit is not proof of infection.

Arrival	Vessel	Previous farm (14 days)	Duration
02 Aug 2026	Steigen	Tuvan	1 h 15 min
28 Jul 2026	Ronja Silver	Slettnesfjord	59 min
27 Jul 2026	Ro Sunrise	Rypefjord	58 min
25 Jul 2026	Veidnes	Storskjæret	3 h 43 min
16 Jul 2026	Ronja Silver	Store Lerresfjord	2 h 42 min
20 May 2026	Steigen	Vedbotn	2 h 2 min
19 May 2026	Steigen	Vedbotn	2 h 15 min
16 May 2026	Veidnes	Rypefjord	2 h 52 min
14 May 2026	Veidnes	Rypefjord	4 h 0 min
12 Apr 2026	Ronja Silver	Ytre Simanes	2 h 42 min
07 Apr 2026	Ronja Silver	Ytre Simanes	2 h 5 min
05 Apr 2026	Ronja Silver	Ytre Simanes	2 h 39 min

Show 5 older visits

Arrival	Vessel	Previous farm (14 days)	Duration
01 Dec 2025	Ro Sunrise	Kristianneset	1 h 59 min
29 Nov 2025	Ro Sunrise	Kristianneset	49 h 49 min
05 Oct 2025	Ro Arctic	Tuvan	24 h 0 min
02 Nov 2024	Ro Chief	Slettnesfjord	57 min
07 Oct 2024	Ronja Havsoy	Storskjæret	4 h 33 min

Source: Norwegian Coastal Administration (AIS) · calculated by the Salmon Ledger · updated 01 Oct 2026

Licences

Site MAB: 3,480 tonnes

Licence	Type	Capacity	Holder
F A 0011	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,051 t	Cermaq Norway Salmon AS
F A 0036	Kommersiell / matfiskSalmon, Rainbow trout, Trout	1,051 t	Cermaq Norway Salmon AS
F A 0039	Kommersiell / matfiskSalmon, Rainbow trout, Trout	987 t	Cermaq Norway Salmon AS
F A 0040	Kommersiell / matfiskSalmon, Rainbow trout, Trout	984 t	Cermaq Norway Salmon AS

Source: Directorate of Fisheries, aquaculture register · updated 01 Oct 2026